Two of my large beds (17ft x 10ft) were extremely weedy and contained lots of perennial weeds including couch grass and nettle. I wasnt able to get hold of enough compost or manure to get a good 6 inch covering on these two particular beds so I treated them with Roundup. The weedkiller has done its job and the weeds are all dead. It is now my intention to simply cover the area with 2-3 inches of manure and begin no dig system from hereon in. (It’s not been necessary to do this with any of my other beds as they are smaller and I was able to follow Charles’s instructions on creating no-dig beds for these). Does that plan sound reasonable, or should I pull up all the dead weed debris before topping with manure/compost. Having read recent post re Roundup I’m worried I’ve caused a problem.