Lettuce can grow hydroponically, but water itself is not a good medium to grow things in. Home » Create Something » How To Easily Re Grow Romaine Lettuce From A Stump Indoors. Watch your lettuce grow. Place on a window sill or under grow lights. But you can’t plop lettuce seed in a bucket of water and expect them to grow. The most common mediums for this type of gardening include peat or rock wool which both suck up water like a sponge. This idea works year round and is a great solution for city folks who simply don’t have the space to grow a garden outdoors. Start Lettuce Seedlings Indoors Poke a hole with the handle of a plastic spoon through each Rockwall cube. The only special equipment required are grow lights, and those are available at most hardware stores and garden centers. Table of Contents Ways To Grow Lettuce HydroponicallyKratky MethodDeep Water CultureBest Lettuce Grow Light300W LED Grow Light Specifications:T5 Grow LightsFeeding Nutrients To Lettuce Facebook Twitter Pinterest Shares Growing lettuce indoors hydroponically is extremely easy to do. Can you regrow lettuce in water? How To Easily Re Grow Romaine Lettuce From A Stump Indoors. To get the best harvest, your lettuce should be fed a liquid organic fertilizer after each harvest. Whereas other microgreens need that time to mature, you can eat the immature leaves of lettuce. But you can’t plop lettuce seed in a bucket of water and expect them to grow. Growing methods. Growing lettuce indoors is not hard at all - in fact, it's one of the few vegetables you can grow indoors with ease! There is nothing more satisfying than growing your own fruits and veggies, but unfortunately, during the winter months, that's not always possible. In fact, doing both is recommended to get maximum production. Direct light is preferred as long as the growing location does not become too hot. In warm climates, the plant will overwinter or you can grow water lettuce indoors in an aquatic environment in a mix of moist loam and sand with water temps between 66-72 F. (19-22 C.). Learn Growing Lettuce Indoor HYDROPONIC SYSTEM Cheap Setup Grow Indoors 365. Growing lettuce in containers requires the right type of pot and planting medium. Thankfully, there ARE some veggies that you can successfully grow indoors for an amazing winter harvest! Survival Gardening – How To Grow Lettuce Indoors. Growing Water Lettuce Outdoors In the wintertime, if water lettuce is grown outdoors in a pond, it needs to be protected from freezing temperatures and covered with plastic or a Hoop House. If you want to grow hydroponic lettuce, pick a lettuce variety and a water culture system for your setup, such as NFT or Ebb and Flow. Water lettuce grows floating on the surface water, and its leaves form a rosette, with dense, submerged roots beneath it.