Artist Reply: Hi Julie, I am glad you are enjoying your container garden! Yes, lettice can be transplanted. I do it with a spoon or butter knife, trying to get a little dirt with the roots. You can see how close I plant mine in the pots from my photo. When harvesting I never pull the plants, I only cut some leaves off with a pair of sizzors and it will keep producing until it gets too hot. You can plant it again in the Fall.