IT’S BUMBLEBEE BONANZA TIME

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Bumblebee Conservation

By: Engrid Winslow

Bumblebees pollinate many of our food crops and garden flowers which means the conservation of the species is vital to our ecology. Some species of Bumblebees are true American natives and are most commonly found in northern climates and higher elevations. Nearly all of the estimated 250 species live in the Northern Hemisphere although there are a few species that pollinate flowers in tropical rainforests in warmer climates. They are social insects that form colonies of around 50 bees with one Queen although only the Queen survives the winter. They commonly build their nest in the ground or in crevices of rocks and are quite good at hiding their entrance.

They are capable of flying (and pollinating) at cooler temperatures and lower light conditions than other bees which makes them important pollinators for plants growing in higher elevations and colder climates that are beyond the reach of other bees. Their plump, fuzzy bodies are a welcome sight that spring is on its way at last. It’s usually the super-sized Queen out and about in early spring as she starts to build a nest and raise brood.

Bumblebees are peaceful insects and will only sting when they feel cornered or when their hive is disturbed. When a bumblebee stings, it injects a venom but unlike a honeybee sting, the bumblebee sting has no barbs. This means that a bumblebee can pull back its sting without the sting detaching from its abdomen and can sting several times. Only female bumblebees (queens and workers) have a sting; male bumblebees (drones) do not. Justin O. Schmidt, author of The Sting of the Wild and the creator of The Schmidt Pain Index rates a bumblebee’s sting at a 2 on the index which starts at 0 and ends at 4. https://en.wikipedia.org/wiki/Schmidt_sting_pain_index.com.

Here at BBB, we specialize in pollinator mixes and our newest one is designed with bumblebee conservation in mind. It is our mission to help you provide nectar and pollen because “the more flowers a garden can offer throughout the year, the greater the number of bees and other pollinating insects it will attract and support.”

Bumblebee Bonanza includes Siberian Wallflower, Rocket Larkspur, Balsam, Yellow Lupine, Arroyo Lupine, Purple Coneflower, Dahlia-flowered Zinnia Mix, Dwarf Mixed Cosmos, Gayfeather, Rocky Mountain Penstemon, Blue Sage, Northern Lights Snapdragon, Purple Prairie Clover, Lacy Phacelia and Beebalm.

Bumblebees are unique because their long tongues can reach the nectar in flowers that other bees avoid, such as penstemons, lupines, larkspur and snapdragons. They collect large amounts of pollen because they have so many hairs covering their little bodies and thrive on daisy-type flowers such as Zinnias, wallflower, cosmos and coneflower. There is a wealth of information available about bumblebees and what you can do to help them. Some of our favorites are info@thebeeswaggle.com and https://xerces.org/bumblebees/.

Remember that the use of synthetic insecticides, particularly the ones that contain neonicotinoids are harmful to all bees. Please avoid using them in your garden, lawns and talk to your neighbors and friends about the perils of using these chemicals.  Neonicotinoids are sold under many different  names such as:

  • Acetamiprid
  • Clothianidin
  • Dinotefuran
  • Imidacloprid
  • Nitenpyram
  • Thiacloprid
  • Thiamethoxam

Let’s all do our part for bumblebee conservation!

Gardening for the Native Bees: 4 Easy Tips For Making Your Garden Solitary Bee Friendly

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Creating a Native Bee Paradise

by Sam DollA cavity-nesting native bee.

There are nearly 4,000 species of native bees in the United States alone! With the exception of bumblebees, nearly every native bee species in North America are solitary. They come in a variety of shapes in sizes, from enormous carpenter bees to the tiny Perdita genus.

If you want to learn more about bumblebees, check out our blog about how you can make your garden bumblebee friendly!

Unlike European honeybees or bumblebees, solitary bees are stingless, do not have a queen, live in a colony, or make honey and wax. Instead, female solitary bees build tunnels to use as nests, where they lay their eggs in a series of chambers packed with a pollen and nectar “paste” for their young to munch on when they hatch. Since males will hatch and emerge from the nest first, the mamma bee will lay the females in the deepest portion of the nest and males in the front.

Around 70% of solitary bees are known as “mining bees” because they tunnel underground to build their nests. The other 30% of bees are cavity-nesting bees and will nest in anything from hollow or pithy stems to dead wood, or even abandoned snail shells!

Native bees are incredibly important pollinators. Unlike honeybees, which carry pollen in a “pollen pouch” on their legs, native bees are a bit less tidy, covering their whole bodies in pollen to carry it home. This messiness means they lose much more pollen as they go flower to flower and it actually makes them much more efficient pollinators. Some plants actually need native bees to be pollinated at all! Squash and gourds and any other members of the Cucurbita genus all rely on very specialized Squash Bees!

For more on the Squash Bees, check out our Blog on the topic!

These bees are pretty neat! Here are some tips for Making your garden a native bee paradise!

1.    Preserve and manage nesting sites

One of the most important things you can do to help protect your local native bees is to make sure that your yard is full of potential nesting sites. For mining bees, leave sunny patches of bare earth for nest sites and try to avoid laying down anything that could be a barrier (like landscaping cloth, gravel, or mulch) for bees accessing or emerging from potential existing nest sites. Also, leave unused areas of your garden with old wood, stones, or branches undisturbed as a cavity-nesting bee haven.

You can also install a bee hotel in your yard. Often made from wood or bamboo, these hotels are great for cavity-nesting bees like the Blue Orchard Mason Bee or Leafcutter Bee! You can build one yourself or buy them from reputable suppliers like our friends at The Bees Waggle.

2.    Make your garden a bee buffet

To ensure that your garden is a Mecca for bees of all shapes and sizes, you need to make sure that there is a diversity of forage as well. Plant a mix of perennials and annuals so that you will have a mix of different blooms at the same time throughout the entire growing season. Also, try to have blocks of color in your garden so bees can easily find their way to the flowers they like over and over again, without having to hunt all around for them. Of course, native bees like native plants, so make sure to dedicate a portion (or all) of your garden to wildflowers. The Xerces Society has a variety of region-specific plant guides for pollinators that can get you started toward planting for native bees.

We did the hard work for you and made our Bee Rescue Wildflower Mix that will provide great season-long forage for both native and honeybees!

3.    Lay off the pesticides

Pesticides can’t discriminate between the bad and good bugs. These insecticides pose a particular danger to mining bees since they are often applied to bare ground areas around structures that are ideal nesting sites for these bees. These insecticides also pose the risk of washing into other areas of the garden and contaminating nest sites.

Neonicotinoids, or neonics, are systematic pesticides that live inside the plants that they are trying to protect. These have been particularly harmful to our various pollinator species because they work their way up through the plant into the nectar and pollen that various pollinators are attracted to. Flowers with neonics applied are actually luring bees and other insect pollinators to their deaths!

For tips on how to protect your garden and the bees in it, check out our eBook on Organic Pest Control!

4.    Take a closer look

One of the most important things your can do to protect native bees is to learn! Take some time to watch all the bees that visit and live in your garden. Visit the Xerces Society website and use their identification guides to try to figure out which bees you are seeing. Most importantly, SPREAD THE WORD! Educate your friends and family about all the bees that don’t make the nightly news and how vital they are to our future!

Other Resources

Check out these resources for more about pollinators and how you can help them

  • Pollinator-Friendly Parks: How to Enhance Parks, Gardens, and Other Greenspaces for Native Pollinator Insects – A great guide for pollinator-friendly design
  • The Dirt – our blog!
  • The Bee Lab – An incredible research lab at the University of Minnesota run by Dr. Marla Spivak, MacArthur Fellow and Distinguished McKnight Professor in Entomology
  • The Pollinator Partnership – Nonprofit dedicated to promoting the health of pollinators through conservation, education, and research.

YELLOWJACKET TRAPS, THEN PANSIES

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Spring Solutions for Yellow Jackets

By: Sandy Swegel

Is Spring about to happen in your neighborhood? Before you start getting pansies or collecting daffodils, stop and put out your yellow jacket traps…if yellow jackets are a problem for you in the summer.

The yellow jacket life cycle is pretty simple. Almost all the yellow jackets die off in winter. Single queens that already “mated” go into winter hibernation…in the ground, or your shed, or woodpile. Once warm weather starts in the Spring the queen wakes up, builds a new nest and starts laying eggs for this year’s yellow jackets. One little queen easily lays 500 eggs. Conservatively, every queen you catch now means hundreds fewer yellow jackets gathering at your picnics in the yard this summer. It is so much easier to catch one queen now than to tackle nests full of angry yellow jackets under your picnic table in July.

A simple pheromone trap works great…it lures the queen to those yellow plastic hanging traps. This is no time for simple soapy water. You’ll be glad you spent the $5 for the pheromone lure refills. And the lure doesn’t affect honeybees.

Catching the queens isn’t always predictable. I put up more than one trap. Last year the trap by the BBQ grill caught ten queens. And a trap under a tree caught two. It seems to differ every year. But I will be grateful come summer.

It’s definitely the time in this warm March we’re having in Colorado. It was 80 degrees today…I got stung cleaning up debris in the perennial bed. The queen rolled over from her winter nap and sunk her stinger into me as revenge. Ouch. Yellow jackets hurt so much more than other wasps. If you don’t go outside in the summer, then let the yellow jackets live. But since they don’t play well with others, I believe in a strong birth prevention policy.

Photocredits:
www.rescue.com/bug/yellowjackets
greenbugpestandlawn.com/learning-center/flying-pest

Why Grow From Seed

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Seed Starting

by Sandy Swegel

We all know it’s a good idea to grow from seed. Every winter I fantasize about the amazing garden I could have if I just got started earlier. And every year I somehow end up buying plants that I know I could have started on my own with a little more planning.

This year will be different she says. To strengthen my resolve and not fall into winter doldrums, here’s my list of Why Grow from Seed.

Native plants.

Native plants are better for pollinators, better for the environment, and more likely to survive and thrive in our yard.

No neonics

There’s only one way to be sure our plants haven’t been treated with pesticides that will hurt pollinators or poison your food. Grow it ourselves from seed. It’s also the best way to keep down unwanted pests like whitefly and thrips that thrive in crowded Big Ag type greenhouses and then come to live in our home gardens.

Diversity.

If we want a standard garden that looks like every other garden on the block, we buy plants where everybody else buys them. Beautiful but kinda conformist. Growing from seed gives us a nearly infinite palette of possibilities. I love having a garden where someone stops and asks “What is That amazing flower?”

More Flowers.

This is the obvious Number One reason to grow from seed. For just a couple bucks we get dozens or hundreds or thousands of plants. The gardeners at the Denver Botanic Gardens often let some reseeding annuals seed themselves all over until their acreage. Last year snapdragons were allowed to grow wherever the wind and birds planted the seeds. We can get the same effect at home. One $2.50 packet of snapdragons has over 14,000 seeds. That’s a lot of adorable low-care flowers to have throughout the garden.

And why do we want more flowers? My first impulse is because they’re just so pretty. But as I happened to read on the front page of our website this morning in big red letters:

“Remember, the more flowers a garden can offer throughout the year, the greater the number of bees and other pollinating insects it will attract and support.”

 

Natural Weed and Pest Control

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Alternatives to Poisons

by Jessica of TheBeesWaggle.com

I have had many inquiries on this topic, and I would like to post some solutions for you to use as an alternative to poisons.

Honey Bee on Dandylion

Weeds do have value to pollinators, as most produce blooms that carry highly nutritious contents for pollinators.  However, they can be overwhelming in their growing power, and we need ways to control them without poisoning the soil and the things that feed on them.  I would like to begin by saying I pull each and every weed that I do not want growing in specific places.  I never use chemicals, not even vinegar and salt.  I would like to urge you to do the same, but I am providing you with some choices that are nontoxic.

  1.  Boiling water.  Pouring boiling water over weeds cooks them, and kills them.  Water is only water, so it’s okay for it to get into the soil and groundwater.
  2. Spray straight White Vinegar on the leaves of weeds being careful not to go overboard.  Too much vinegar in the soil isn’t good for the pH of the soil so it will affect the balance of the existing underground ecosystem if it is applied excessively.
  3. Spray a mixture of salt and vinegar…and then maybe pull them, roast them, and eat them?  Just a joke.  The recipe is 1 cup of salt into 1 gallon of vinegar

Wasps, hornets, and yellow jackets are the other most popular topic of seasonal pests.  I don’t consider them much of a  pest because they eat other insects, which makes them a very important part of the food chain.  So, instead of finding ways to kill them, I find ways to coexist.  They do not like peppermint oil, lavender oil, or eucalyptus oil.  So, the best prevention is to spray a mixture of these oils with water around the areas you’d rather them not set up shop.  The recipe is as follows:  1 tsp of peppermint oil; 1/2 tsp lavender oil; 1/2 tsp eucalyptus oil into 2 cups of water.  Use a good spray bottle to apply this mixture anywhere you do not want them present.  I suggest daily application, and the smell is pleasant, at least I think so.

Bald Faced Hornet

Remember that every living thing has a purpose, so frugally controlling them is in our best interest! I hope you all are having a wonderful summer so far! Thank you for being part of this very important movement to save our bees!

Jessica

Here are a couple of links to steps to control pests using non-chemical controls and least toxic methods, and a link to a great video from BeyondPesticides.org website.

Manage Safe

Organic Land Managment Practical Tools and Techniques

 

Pollinators Support Biodiversity

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Importance of Pollinators

by Jessica of The Bees Waggle

Biodiversity is the variety of life.  It showcases the relationships between all life forms on Earth.  It is the web of life, connecting all life on Earth in an interdependent web of function, purpose, and necessity.   It can be a protective mechanism against catastrophic failure of life.

Biodiversity provides:

A wide array of foods and materials, which contributes to the survival of all.  Examples include: medicines derived from plants; 7000 species of plants are also food sources for other species.

Genetic diversity, which defends against diseases and pests.

Example:  Monoculture crops are not diverse, genetically or otherwise,  and are thus susceptible to influxes of pests and disease, which is one reason why farmers of these crops are so dependent on chemicals to sustain crops. Planting hedgerows with a variety of plants encourages natural pest control for crops via predatory insects and birds.

Ecological services, which are functions performed by many species that result in sustaining life on Earth, and are a supported by biodiversity. Within each ecological service, there are many species at play.

Some examples of ecological services are:

Decomposition of waste

       Water purification

       Pest control

       Flood moderation

       Soil fertility

       Pollination

Adaptability to disturbances, which is achieved by a concerted effort of many life forms repairing the damage done by a natural disaster, or another form of disturbance.

Every piece of every ecosystem is important and each piece depends on the other pieces. We, as humans, are part of a planet-wide ecosystem, and we depend on many different systems for our survival.  One extremely important web we depend on is that of the pollinators.

Pollination supports biodiversity!  It is a mutually beneficial relationship between the pollinator and the pollinated. One without the other would be catastrophic. Pollination supports diversity of plants, as well as the animals that feed on those plants.  This beneficial relationship reaches broadly to birds, small mammals, large mammals, other insects, and us!  If this relationship were lost, many ecosystems would implode.

Pollinators contribute to biodiversity and life on Earth in ways that are significant to every ecosystem existing today.  Roughly 90 % of all flowering plant species are specialized for animal-assisted pollination!  7000 plant species are a form of food for other species.  Many of these flowering plants develop food only as a result of visiting pollinators, and this food supports the lives of countless species, including humans!  The disappearance of pollinators would inflict catastrophic consequences on the entire planet.

The diversity of pollinators alone is staggering!  There are 20,000 bee species accounted for on Earth, and there are likely more. This number does not account for the hundreds of thousands of species of flies, moths, butterflies, birds, bats, and beetles who also pollinate flowering plants.

Our pollinators are struggling.  Some populations of butterflies have declined as much as 90%!  Honeybee colony losses are at an all time high!  What do you think that means for our native bee species?  I can tell you it isn’t good.  The struggle is due to: loss of habitat, lack of food, and pesticide use.  

The fact that pollinators are broadly struggling threatens the balance of biodiversity, and life on Earth!

You can help by doing the following: add back habitat (shelter, food, and water), plant flowering plants, and please stop the use of all pesticides (including: insecticides, fungicides, and herbicides).  

Pesticide Applicators CAN Protect Pollinators

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Tips for Pesticide Users

By Sandy Swegel

Most of the visitors to our Facebook page and website are already among the converted. We know how important pollinators are and we’re doing everything we can from avoiding pesticides to planting pollinator gardens in hope of preserving our pollinators.

Sometimes as activists for the things we feel passionate about, we human beings have a tendency to make the people who oppose our opinion into our enemy. The reality is that right now, everyone isn’t going to quit using pesticides no matter how much we want that. We all have spouses or neighbors or friends who are going to use pesticides no matter what we say. Garden and tree businesses are going to spray. So what the North American Pollinator Protection Campaign (NAPPC) is doing is bringing together government agencies like the EPA, pesticide manufacturers, licensed pesticide applicators, and non-profits like beekeeping associations to develop guidelines to teach pesticide applicators how to choose pesticides and how to spray while causing the least harm to bees and pollinators that end up as collateral damage.

A couple of obvious things pesticide users can do:

Schedule your pesticide application when bees aren’t active. Saturday morning or in the evenings after dinner before dark are the worse time to apply pesticides. Bees and pollinators are foraging then and likely to get sprayed or eat pollen or nectar that has just been sprayed. For some pesticides, simply applying it at night protects the pollinators while still killing the pests. You have to wake up before the bees or stay up after they go to sleep.

Plan your pesticide applications when plants aren’t in bloom. This isn’t always possible but some bloom times are short and you might find that waiting another week until the bloom is finished will still kill your pests and protect the pollinators.

Avoid drift and runoff.
Don’t spray on windy days. The wind carries the pesticide into neighboring areas or into your nose and eyes.
Don’t spray when it is about to rain. Many pesticides will dry within a few hours of application and be less toxic to pollinators. If you spray when rain is coming, those pesticides are going to be washed away into storm drains or rivers.

Keep the pesticide spray on the problem area….don’t keep spraying the rocks or sidewalk because you’re walking from one area to another. Use only as much pesticide as needed to achieve your goal. Drenching everything isn’t necessary.

Read and re-read labels. The formulations of your favorite pesticides can change Some are very toxic to bees. Others are only toxic under certain conditions. Know exactly what you are spraying and how it affects bees.

Pesticide applicators aren’t out there spraying because they hate bees. They want to get rid of their pests in the most efficient way. Print out this brochure for friends and neighbors and even companies you see applying pesticides. Help the people who INSIST on using pesticides learn that they can still protect pollinators.

Brochure

Photos and more information:

 

www.Environmentalleader.com/2013/08/16/epa-launches-bee-protecting-pesticide-label/

Managing Pesticides to Protect Bees

How To Deal with Troublesome Pests In Container Gardens

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Pests Control Tips

by Angela Thomas04.20.16a

Many gardeners choose to grow plants in containers for the ease of planting and for the convenience of placing the containers anywhere they want. Maintaining healthy plants in a container garden is no different from plants in a garden.

However, container plants need more care. Taking care of them slightly differs from regular plants. They have limited soil volume and are subject to more stress than garden plants which requires constant monitoring for pests. If you’re looking to save time and the stress of having to find the pests that may of intruded into your garden. It could it be worth checking out the best home security camera deals on the market to make finding the pests and what they’ve left behind easier for you.

You must regularly inspect the foliage, bloom, and fruits to find out signs of infestation. You must also examine the underside of the leaves and stems as some insects hide in those places.
If the plants have any infected or dead leaves, you must immediately remove them. If you find few yellow leaves are on the bottom of the stem, do not worry as they naturally occur when the plants grow.

Mix a few drops of mild detergent in water and wash the foliage. Container plants will benefit from this if you repeat it every month.

If the infestation does not respond to soapy water, you may have to use commercial pesticides that are designed to control specific pests. These days manufacturers offer alternatives to chemical pesticides so visit the local store and buy the products if infestation continues. While using such products, you must always follow the instructions, and they must be kept out of reach of children.

Alternatives to Chemical Pesticides

To avoid pest infestations, do not reuse the soil especially if the plants were affected by bacteria. Even though the soil looks fine, it might be contaminated or have insect eggs which are hard to see. This infographic on natural pest control methods can give you the ideas to get it done on your own. However, if you would prefer to get some professional help, rather then do it by yourself, then you could always check out someone like pest control Des Moines.

DIY Pest Control Infographic

04.20.16b

Clean containers will be helpful to prevent problems. When you are going to start a new planting, scrub the pots and containers using liquid detergent and water. To reuse an infested pot, soak it in a solution of one part household bleach to ten parts water for about an hour. Rinse all the pots thoroughly and dry them in sunlight before planting. Keep in mind that the area around the containers should also be clean as dirty surroundings is a way through which pests attack plants. After using the tools to treat the infested plant, thoroughly wash them, before you use it on other plants.

Healthy plants can fight off pests that attack them. So make sure you give the plants adequate sunlight, organic fertilizers, and water. There must be proper space between plants so that there will be enough air circulation. If pests infest a plant, keep them away from the rest of the plants because they will infest the healthy ones too.Many pests infect container grown plants especially spider mites. Stressed plants are most likely to be attacked by pests than healthy ones. So regularly monitor plants so that you will be able to detect problems in the early stages.

[http://i.imgur.com/RXdrB4W.jpg] (Plants in containers)

[http://i.imgur.com/QjYu9XV.jpg] (Cleaning container)

Aphids Q&A

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Gardening TipsImage by <a href="https://pixabay.com/users/mabelamber-1377835/?utm_source=link-attribution&utm_medium=referral&utm_campaign=image&utm_content=4243855">???? Mabel Amber, who will one day</a> from <a href="https://pixabay.com/?utm_source=link-attribution&utm_medium=referral&utm_campaign=image&utm_content=4243855">Pixabay</a>

By Sandy Swegel

We got a great question from a customer this week about controlling aphids. Her frustration resonates with most of us who garden.

 

Q. Aphids are terrible, tiny creatures and I fight them every year. I’ve been looking for the best ways to make sure they don’t screw with my garden this time. I thought I had a good way; planting garlic around the plants. “Aphids don’t like garlic,” one link said.  “Aphids love garlic leaves, said another one. Soap mixture, Neem oil, rubbing alcohol mixed with soap and water, importing good bugs that love to eat the aphids. I refuse to use chemicals that poison everything, it makes growing organic pretty pointless. Does anyone have any SURE FIRE, tried, and true methods?

A. The key to reducing aphids in your garden is to understand their lifestyle. Controlling them is like cleaning the house. You can’t just clean a house full of people once and expect the house to still be clean a week later if you didn’t keep picking up stuff all week. When you use any treatment you might kill most of the adult aphids that day. But the ones you missed or who were eggs that wouldn’t hatch for another day, are still eating and reproducing. Reproduction is the key to aphid success. They reproduce both sexually and asexually. They lay eggs to survive the winter. And they have live births in warm weather. Each one can create up to 100 new aphids per month.

 

My best sure-fire, tried and true method (or as close to that as one can get) is this:

Accept that you are going to have some aphids. To kill them all, even if possible, means you would also kill all the beneficial insect pollinators and you don’t want to do this.

 

Understand how aphids die. Warning: graphic content ahead.
It is super easy to kill aphids, which is why plain water spray works great. Aphids feed by attaching to the plant with their mouths. When you spray water on the aphids, the force of the water tears the aphid off the plant. The head and mouthparts stay attached to the plant, instantly killing the aphid. Even just brushing off all the aphids on a leaf with your finger decapitates and kills all those aphids. That’s why you don’t have to poison them…if you can just mechanically remove them.

Be vigilant (every few days) about checking for aphids.
New aphids are hatching in leaf litter or being birthed by the aphids who were hiding out in the weeds next door. You have to spray the aphids every time you see them in large numbers. Each aphid can have dozens of generations…They are baby-making machines. You have to keep after them at least until you see you are no longer getting infestations.

Be careful not to eliminate beneficial insects.  There’s yet another reason not to try to kill off aphids outside, even with “safe” organic treatments like soapy water. If you kill the aphids, the aphid-eating wasps, another of those native beneficial insects, won’t have anything to eat and they’ll leave your garden.  They are eaten by so many beneficial insects that it’s rather amazing that we see any at all. Yet there are so many on our plants at times.

This week I’m seeing thousands of them on the new growth of roses. And while my first instinct is to kill them in some way, I have finally learned to just watch them. I know what I am seeing is a mini-population explosion that will usually be followed in a week or so by mini-population explosions of predators that eat aphids. If we try to kill off the aphids which are at the bottom of the beneficial insect food chain, then the beneficials will fly away to another garden.

I knew about many of the predators of aphids like ladybugs and lacewings, but I learned yesterday that tiny native aphid-eating wasps eat a LOT of them. In addition to wasps that just eat the aphids, there are parasitic wasps that lay their eggs inside of them. When the eggs hatch the tiny larvae eat their way out of the aphid. A bit gory, but effective in guaranteeing enough food for baby wasps.

So I challenge you to a two-week experiment. Let the aphids be when they show up and just watch the plants for a few days. See who shows up to dine on them. Some possibilities include wasps, both large and small, hoverflies, ladybugs, and lacewings. It will be a fascinating discovery of how many small beings live in your garden, there to help you keep everything in balance.
Nature does provide a natural balance if you have a healthy garden that supports beneficial insects. If you are aggressively treating aphids with garlic or neem sprays, you are also killing all the other insects that eat aphids.

Alter the conditions in your garden that reduce the number of aphids.Fighting Aphids on Organic Lacinato Kale

Don’t over-fertilize. Aphids love nitrogen. You will get a little aphid bloom every time you add nitrogen to your plants. Reduce the nitrogen and you don’t have so many of them.

Encourage earthworms and use earthworm castings. Earthworms produce an enzyme chitinase to help digest their food. Aphids are repelled by chitinase. Unfortunately, the chitinase doesn’t last long enough to be the only deterrent.

Encourage good environmental conditions like airflow and temperature. This works really well indoors. In my greenhouse, I can reduce aphids by keeping a fan going and shading the plants from the really hot afternoon sun. They are often in greater numbers on plants that are stressed.

Finally, if you do want to use “organic” sprays, simple soapy water works well. (1 teaspoon per gallon). Some people use the kitchen spray with garlic and Tabasco sauce. I think the science is not clear on neem. It definitely works but it works by disrupting insects’ hormonal systems and I’m not convinced it doesn’t adversely affect beneficial insects. Some studies say Neem only kills sucking insects. I would try gentler methods first before turning to Neem.

More about gardening and aphid control

More about interactions between predators of aphids

 

 

Photo credits:
https://en.wikipedia.org/wiki/Aphid

 

Straw in the Garden: Be Careful!

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Straw May Be Killing Your Crops

by Sandy Swegel

Straw bales are one of my favorite garden tools.  They are useful to the gardener in so many ways.  All nicely tied up, straw bales are like giant Lego blocks that can be stacked to make so many things. I’m using the term “straw” bale, but old “hay” bales have the same great features.  Three bales make a great compost bin.  A row of bales makes excellent walls that double as sitting places.  Open the bales up and you have the perfect mulch to keep strawberries or squash off the ground or to make a path protected from mud.  Give the chickens one bale and an hour later they have spread it evenly over the coop floor in their pursuit of worms or food in the bale.  A square of bales with some plastic thrown over is an excellent cold frame.  And I haven’t even begun to touch on the usefulness of bales as a fort.

So it was distressing this week to be reminded that we can no longer just trust the wonderful bales that we scavenged in the past because modern agriculture has rendered hay, straw, and even the gardener’s best friend, manure, unsafe for growing food.

This conversation came up because tomatoes are very sensitive to herbicide damage.  The most common cause of herbicide damage extension agents used to see was from “herbicide drift” where chemicals sprayed nearby go airborne and are spread by the wind onto your garden.  But my experience this week was with tomato plants, a very susceptible plant – sort of the canary in the mine.  After considering dozens of diseases from virus and fungus and bacteria that might be stunting a friend’s tomatoes and keeping them from setting fruit, we had to face the likelihood that the culprit was last year’s straw that was liberally mulched throughout the garden.

Hay and straw become hidden poison bombs in the garden when farmers use the new generation of weed killers (that are very effective on weeds) like Milestone or Forefront or Curtail.  Milestone is aminopyralid it is a very persistent killer of broad-leaf plants.  Farmers like it because it kills weeds and because unlike other weedkillers, they can feed treated pasture to their animals without any waiting time.  The label says clearly that while animals can still feed on the pasture, the herbicide survives being eaten by the animals, and it survives composting.  So even year old hay that you’ve composted or nice old manure from free-range animals on pasture still has enough herbicide in it to kill your tomato crop.

The bottom line is you can’t just get straw at the feed store or old hay or manure from a neighbor’s barn to use in your garden unless you know how the original pasture was treated this year and last year.  It’s another sad but true example of the destructive environmental impact even small actions such as applying some weedkiller can have. And it’s not even just the farmer who has to take care.  Grass clippings are a gardener’s favorite mulch…and some of the new weed killers or weed and feed products contain these long-lasting poison time bombs.  It’s easy to want to kill some thistle…but you have to read the very tiny small print to see if you are destroying your own garden by using the organic practices of mulching with grass or hay or straw that generations of gardeners have sworn by.  It’s not your father’s straw bale anymore.

http://www.ces.ncsu.edu/fletcher/programs/ncorganic/special-pubs/herbicide_carryover.pdf
http://www.motherearthnews.com/Grow-It/Milestone-Herbicide-Contamination-Creates-Dangerous-Toxic-Compost.aspx