Viewing post #469501 by chelle

Leftwood said:Yes, the worst thing about tilling is breaking up rhizomes and stolons of grasses and thistle that will produce brand new plants. I suspect that all around the edges of the daylily bed, grass has invaded. Mulching will not cure this, as the already established grass will come up through the mulch. Barring a chemical approach, I suggest that you will need to dig and remove the grass at the edges, and probably need to dig some of the edge daylilies to extricate the grass roots from the plants. Then mulch.

Yep.

I like to trench the edges of my open beds in the fall. Autumn into winter, and winter into spring are rampant creepy-crawly grass invasion times; trenching slows it way down. If there's still a lowered edge when mowing season starts I fill it in with mulch. It'll still try to get in, but it's much more difficult for it to get established quicker than I can keep up with it. I didn't trench last year, more's the pity. Now I'm forced to play catch-up. (At some point anyway ...much too hot to work on it today!)