by Sandy Swegel
Watercress is another one of those unassuming plants, almost weedy, that is a superfood for humans. In the brassica family, watercress (Nasturtium officianale) is rich in vitamins, minerals (especially calcium) and sulfides. It’s not just for watercress sandwiches and tea. It is a great addition to salads as either sprouts or leaves, excellent juiced or added to juices and makes a lovely pureed spring soup. And pretty yummy just for nibbling.
How to grow Watercress indoors:
Watercress sprouts easily and you can grow it in a jar just like you do alfalfa seeds. Its spicy kick is great on sandwiches and salads.
Seeds are pretty easy to germinate…The biggest challenge in growing watercress indoors is that it needs to always be moist, especially during germination. You can accomplish this by starting the seeds in a small pot of clean potting mix and then setting the pot in a saucer of water. Misting is great or put a plastic cover over the seed mix if your air is dry. Someplace slightly warm like the top of the frig is a great germination spot. They don’t need light to germinate.
Once the seeds are going, you just need to be sure the plants are moist with fresh water. Think about their ideal natural habitat in Europe: slow-moving creek edges in bright shade. Some people grow them in water tanks with aerators if you want to get fancy.
One secret to tasty watercress is to keep the growing plant cool and out of hot sun and to harvest it before it flowers. After flowering, the leaves become more bitter.
Grow Watercress Indoors in late winter it is such a promise of Spring. But it doesn’t need to be an indoor plant. After your weather warms to above freezing, you can plant your watercress outside if you have a place that stays pretty moist. If you have a pond or fountain the watercress is thrilled living in a pot in about an inch or two of water along the edge. I’ve seen it in a shade pot with impatiens and it was pretty happy.
And once you have nice succulent leaves, watercress, slivers of cold cucumber and butter on thin white bread is actually pretty awesome.