Your USDA hardiness zone is neither helping you nor hampering you in your quest to keep these raspberry plants contained. I like to include this information, it helps paint the picture of whats going on. I wish all people would include this info in their posts.
The root barrier/metal shield was the only option I could think of, and it seems to be the only thing offered in the articles.
"I like to include this information, it helps paint the picture of whats going on. I wish all people would include this info in their posts."I can appreciate this, but it's still not going to make any difference with raspberries or blackberries in these zones (yours, mine, and a number of others where these plants flourish
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We have a raspberry patch here in north Jersey. The only way we've found to (somewhat) control it is to prune aggressively every early spring, and my arms are proof that we've done that the past two weekends. :-) We cut the stems down to a couple of feet and for the ones that managed to swoop out and transplant, we're ruthless and just pull 'em up. It's a never-ending battle, sorry to say. And so unfair that we lose so many berries to the bluejays and catbirds!!
Every year cut off the old canes -- they're just there to cause a bramble. By "old" I mean the ones that fruited this year. That'll keep the aboveground under control.
As for spreading underground, I should think a sheet of metal about 1 ft wide buried vertically around your bed would work.
my raspberry patch is in my yard, far away from my garden. i keep them contained by regularly mowing down anything that grow outside of the area i've allowed for them. its been working for me for about 10 years now.
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The root barrier/metal shield was the only option I could think of, and it seems to be the only thing offered in the articles.
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As for spreading underground, I should think a sheet of metal about 1 ft wide buried vertically around your bed would work.
Happy digging!
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