Hugelkultur Raised Beds→Can this idea be used to smother unwanted invasives like ditch lily?

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Name: Sharon
McGregor IA (Zone 4b)
caitlinsgarden
Jul 13, 2015 11:41 AM CST
Or will they just climb up into the rich soil and continue to spread? I do this already on a small scale by making compost piles with branches, etc. Then I just keep sifting out the largest branches until they are incorporated into the soil. But this is a terriffic idea! I guess the important thing is to pack all the air spaces and crevices, or at least the largest ones?
Name: Dave Whitinger
Grapevine, Texas (Zone 8a)
Region: Texas Garden Research Contributor Million Pollinator Garden Challenge Charter ATP Member I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level
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dave
Jul 15, 2015 2:38 PM CST

Garden.org Admin

Sorry for the delay in replying. I don't believe that a hugelkultur mound will be enough to smother difficult weeds like this. They'll just grow right up through the layers of soil. Maybe if you cut them down first and then covered them with multiple layers of thick cardboard first, that might kill them.

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