I don’t grow iceberg, but that sure sounds more like a romaine or something. I am having great success this year growing endive in a pot.
I go and harvest it about 3 times per week, and there’s always more that has grown. It is doing so well, and lasting so long, that I am thinking on planting a pot this fall to bring into the house for fresh endive during the winter.
I have been wanting a grow box to grow a pepper and tomato plant indoors during the winter, but so far have not wanted to spend the money, and just make do with big pots that I have on hand.
“I have been wanting a grow box to grow a pepper and tomato plant indoors during the winter,”
I use an old acrylic aquarium as a grow box. Works great.