At this point you can either attempt to regrow from the same plant or you can pot your plant to continue the growth. Carrots are also root vegetables like beets. Here’s how to grow some of your favorite vegetables out of their cuttings. Romaine lettuce and other large bunch greens like bok choy can easily be regrown in water and then transplanted into the garden or pots of dirt. ( Image source: SnapGuide) 2. ( Via Kimberly Stoney) You can also plant the beet top in soil for a longer harvest. 23. You can grow sweet potato in water from sweet potato, you can then transplant it into garden soil. You can … Save the thick stump end Beet greens will start to grow, which you can use in salads. For these, make sure you keep the thick stump end intact when cutting up the leaves for salads and other dishes. Dip the cut end in the rooting hormone and plant at the desired spot. Growing carrots from scraps. It’s that easy! Once the roots are developed, lettuce does better in soil than in water, as water doesn't contain any nutrients needed for the plant to grow to its full size. Lettuce – Place leftover lettuce leaves in a bowl with a bit of water in the bottom If you haven’t done this before, now is a good of a time as ever. Also, you can multiply sweet potato plant from its cuttings, just take 4-6 inches long cutting from a vigorous vine and make the bottom half part leafless. With this in mind, it’s important to make the most out of your produce—which is where vegetable cuttings come in. This trick applies to many veggies and herbs! How to Grow Lettuce from Scraps. Arugula has a small root system, so you can space it as little as 4 inches apart if you're planning to harvest young leaves, and 6 inches apart if you're planning to let them grow to maturity.