This can be done with green onions, celery, garlic etc
Instead of throwing away your lettuce head cut off leaves at the head so that the head stays intact and place the stump in a bowl with about ½" of water and put it on a windowsill.
You'll start to see new leaves, and they'll be full grown in 3 to 4 weeks.
Avoiding food waste!
https://fbcdn-sphotos-f-a.akamaihd.n...16898587_n.jpg

