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Trees/weeping maple


I have a weeping maple in my front yard that has gotten very wide and I would like to trim it.  Can I do it now or do I need to do it at a certain time of year?

The simple answer Is you can do it now.

But, how much are you removing?

1) never remove more than 25% of foliage in a single year, regardless of when you prune
2) if removing more than a very small amount, it is preferable to wait - the tree has exerted energy to produce foliage, let that foliage return energy by photosynthesis before removal is always preferable ( in other words once leaves are on, let them do some work and gain back some energy the tree used to produce them )

If your are removing larger volume of foliage in total, say close to the 20-25% range, remove small amount now, and some more in a few weeks.  This give you some relief now, and allows the tree to get some benefit as well.  A compromise we will say.


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Robin Wells


Most of my experience is in urban forestry and landscape environment. Questions related to tree identification, tree diseases or insect related problems, soil related issues or soil science, pruning techniques or practices, pesticide related questions, fertilization of trees or shrubs, tree support systems (cabling or bracing), tree planting, tree watering needs or tree risk assessment/management, although insect related we also have a specific area dealing with the emerald ash borer.


30 years work in urban forestry. Bachelor degree in forestry. ISA Certified Arborist. ISA Certified Tree Risk Assessor. Consulting Arborist. Ontario licensed pesticide applicator.

ISA Intrenational ISA Ontario Ontario Commercial Arborist Association Tree Care Industry Association American Society of Consulting Arborists

Midland Mirror ( newspaper )

Bachelor degree in forestry. Many other post university seminars and courses in Aboriculture.

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Various commercial, residential, municipal, real estate and legal clients. Typically do not list the names.

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