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rooting crabapples from a branch #868796

Asked May 16, 2024, 7:03 PM EDT

Last summer I trimmed my Prairiefire flowering crab and put several branches in a bucket of water, hoping they would root eventually. The bucket had a lid with several small holes drilled in it; the water never evaporated, and rain refilled it as necessary. I forgot to bring them in last winter--I'm sure the water froze solid--but to my surprise, this spring they have leafed out! But when I looked in the bucket, there were no roots whatsoever. Is there any hope of planting these shoots? Can I do anything more to encourage root growth? It seems a pity, with branches so tenacious of life, not to give them a chance at becoming a tree.

Hennepin County Minnesota

Expert Response

These are hardwood cuttings.  They are acting as if they are coming out of dormancy and as if they are still attached to the tree. Without roots they will die because they are getting water but no nutrients.  You could try rooting them by taking off most of the leaves, cutting higher up, using a rooting compound and putting them in vermiculite or other loose soil mixed with vermiculite or perlite.  The chances are pretty low that they will survive.  
Softwood cuttings this spring would have a better chance.  Spring plant hormones may help it root.

See:  https://yardandgarden.extension.iastate.edu/how-to/propagation-deciduous-trees-and-shrubs-softwood-cuttings


MaryKay, Master Gardener, Tree Care Advisor Replied May 24, 2024, 4:44 PM EDT


On Friday, May 24, 2024 at 03:44:22 PM CDT, Ask Extension <<personal data hidden>> wrote:


The Question Asker Replied May 24, 2024, 5:50 PM EDT
You are welcome!
MaryKay, Master Gardener, Tree Care Advisor Replied May 24, 2024, 9:32 PM EDT

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