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Replacement plant
I saw Voodoo post about this particular plant, so I thought I'd ask - Rhamnus frangula 'Columnaris', Columnar Buckthorn, I believe is on the list of invasive weeds in MN and is illegal to sell and to plant there. It's still legal in Wisconsin, and honestly, I do use it. I'm aware of it's propensity to spread far and wide, with the bird-delicious berries being sown everywhere. But I have yet to find a deciduous plant that can do what this does, which is grow very narrow and tall. I had a nursery recommend a Peking Cotoneaster (Cotoneaster acutifollus, I believe) as a replacement, but they are much fuller and more leggy than the buckthorn.
What would be a suitable replacement for this plant, so I can continue to be in the good graces of my fellow landscapers?
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