Plant ID forum: Help identifying tree with shoots like raspberry canes

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KKuryllo
Feb 20, 2017 1:30 PM CST
We have recently move into a new property in Ontario Canada and there are 4 odd looking trees growing here. My guess would be that they are not native and some sort of foreign ornamental import.

The most distinctive feature of these trees are the new branches which look like raspberry canes. They are red, thorny and thickly covered in red hairs. As the branches age they lose this appearance and look typical. The tree appears to grow to about 15 feet in height. It also seems to be highly invasive. We have found about 20 or so shoots coming up in random places in the backyard. Many of them appear to have grown about 3 feet in a single season. At first glance they look like raspberry canes but are really the same species as these trees.
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Name: John
Scott County, KY (Zone 5b)
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ViburnumValley
Feb 21, 2017 10:43 PM CST
Where in Ontario (a very large and diverse province, from Hudson Bay to Lake Erie)?

What if you were to prune/collect some examples of these hairy thorny stems, and lay them in a position (countertop, driveway, sidewalk, or the like) where you could take clear closeup images of the stems, buds, hairs, thorns, etc.?

That would go a long way toward helping ID these plants. You could do the same with some of the "normal" branches, showing the dormant twigs/branches/buds clearly.

There are Robinia sp. native to North America with bristly young stems and thorns at leaf nodes - Robinia hispida is one. Compare your plants with that. Robinia sp. are also notorious colonizers, meaning that they freely sprout new stems from their root systems.
John

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