I've been playing with it too as I prune other peoples rosemary plants.
So far the only thing I can see is that you should do lots of them. Only about 1 in 20 of mine seem to strike. The thicker ones with few leaves seem to have more success.
This is straight into potting mix without rooting hormone.
If you haven't, try scraping back the bark and exposing more of the cambium for the part of the stem thats going into the ground.
Looking back I think covering the pots in plastic bags to raise the humidity would have gone a long way.
Not doing that was a bit of a rookie mistake.
I only really needed 1 rosemary plant which has rooted and is growing well. This second one I'll plant but it was really just an experiment.
There's something about growing cuttings that I found really cool. Basically plants for free.
Yes! That's the coolest part. Growing money from "trees". Lol
I grow them out to fill out my ever expansive food forest system and sell some to people during our garden tours.
