You know, I’ve never tried that and now I have no leaves left. Well, maybe some teeny tiny baby ones. I have nothing to lose so I will try that. Thank you. Don’t know why I never thought of that before! I root a lot of things.
All you need is a couple of tiny ones at the top. 4+ nodes is best. The roots will grow out of the nodes. This way you don't have to wait for your basil to bolt to get seeds. If it's a good flavored plant, the clone will be good as well. I've found it works best with sweet basil. You want green stems, not woody ones. Change the water every few days. When the vase gets full of roots, stick them in the ground. Here's some I popped in yesterday with some beach crotons in the middle. Free plants are the best plants.