Mine have more than doubled in height and are still stretching. The tallest was 38" yesterday, she started at 18"
Boy, I'm glad you guys started before me. Based on some of these Pineapple Poison grows, I'm thinking of topping my 2 plants. Seems like these girls like to stretch like crazy.
I've noticed my young seedlings are probably some of the tallest seedlings I've ever grown. And, I even hammered them with my cob less than ~18" from the tops, without negative results.
Keep up the great grows, growers. I enjoy all your posts.