I had forgotten I’d posted this thread, but it seems like the right place to summarize my somewhat successful efforts to root avocado cuttings over the last couple of years, in case anyone wants to learn from this experience (or add their own experiences trying similar techniques).
Shortly after starting this thread, I began trimming and saving the tops I removed from rootstocks during grafting, and tried various methods of rooting them, including:
- Placing them in a glass of water and change the water occasionally (they callused fine but never rooted)
- Placing them in potting soil with no humidity dome (mostly they died)
- Placing them in potting soil with a humidity dome (more than half still died, but a few rooted)
- Placing in the back of an aquarium filter where the filter pad usually goes until callus, then into potting mix with a humidity dome (high rate of success in 6+ months)
Here’s my somewhat up-to-date list of the current successfully rooted (or suspected to be) cuttings so far, minus a few that I killed from frost damage and not yet including a few that I suspect have rooted this spring.
One thing I haven’t yet tried is either hydroponic or aeroponic rooting techniques, so that’s next on my list.