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Ideas for killing Corydalis
WorriedWeed
Posts: 1
in Talkback
I have a large wall of dressed granite with Corydalis ( yellow ) growing in profusion in the mortar. Charming but not good when the building is to be upgraded and sold. I tested killing Corydalis to the roots with RoundUp but it seems to be quite resistant. Any ideas from the experts?
0
Posts
Hi WorriedWeed. I've often said on the forum that I don't rate Roundup as a weedkiller. I don't use it (weedkiller) much, but when it's needed, I use Resolva. It works very quickly. I'm plagued by dandelions as other residents don't keep on top of them, and I have used Roundup in the past, but it's too slow. By the time it starts to work, the flower has formed, so I still have to take them off.
I live in west central Scotland - not where that photo is...