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How deep can ground elder survive?
Xref: kermit uk.rec.gardening:194112
"Martin Brown" wrote in message ... In message , Roderick Orr-Ewing writes My apologies - another question about ground elder but I have looked back and can't find the answer to this one in previous postings. (Although there have been so many I cold have missed it.) I will be shifting some soil in my garden soon to make a bank. Some of the soil I will be using has ground elder in it and I was wondering from what depth the dreaded stuff can still survive and grow. Hit the stuff with glyphosate a couple of weeks before you start digging and it probably won't grow back at all. My guess is anything more than a couple of feet under will not easily grow back. But it depends how much ground elder root there is in your soil. The bank will be about 5ft high with a base of about 8ft so stuff in the middle at the bottom will be 3 to 4ft from a surface. I would be sorry if in a few years/months time I discovered that it had crawled back out to haunt me again! Thistles do that... So will ground elder IMHO. Being shallow rooted and not heading a good distance to the surface are two very different things, and as we've all experienced, weeds can go to astonishing lengths to survive. Also in your digging you're almost certain to get small bits of the root system breaking off and finding that you've inadvertently planted them in a very nice situation. I would hit them with the glyphosate like Martin said, and if you can, cover the bank with black polythene for a month or two to hopefully exhaust it before it reaches the light. Still no guarantee though, it's persistent stuff. Steve |
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