I haven't tried a completely bare branch, but my 3 year old got a hold of one of my small cayenne plants that had been in a solo cup for ages. the stem was pretty woody, and he snapped it off with some very jagged edges, some parts ripped up about 3-4" along the stem of the maybe 10" plant. Some leaves were very roughly torn off and I had NO hope for it. I had just up-potted it the day before and fed it some fish emulsion, and carelessly stuffed the thing deep in the dirt of the same pot expecting nothing. It rooted, and the very short woody stem started shooting out new branches.
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That was pure beginner's luck. I'm sure if I purposely try to root something I really wanted to keep, I would fail miserably.
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That was pure beginner's luck. I'm sure if I purposely try to root something I really wanted to keep, I would fail miserably.