It really depends on how close your landscaping is to the mat and how long you’re running it. I’ve seen similar issues—grass browning up right at the edge, especially if the mat’s on all day or there’s no buffer. One neighbor tried putting mulch between the mat and their flower bed, but honestly, the mulch dried out and got pretty brittle too. Pavers or some kind of hardscape seem to hold up better if you’re worried about plant damage.
I keep wondering if the heat could actually mess with root systems over time, not just the visible part of the grass. Has anyone noticed problems with shrubs or deeper-rooted stuff nearby? I haven’t seen much research on the long-term soil temperature changes, but I’d be curious if that’s an issue after a few winters.
Yeah, I’ve seen the grass at the edge get kind of crispy too, especially after a heavy winter when I left the mat running longer than usual. Haven’t noticed issues with my shrubs yet, but I do wonder if the roots are getting cooked over time. I put some bricks between the mat and my flower bed last year, and that seemed to help a bit—at least nothing looked fried this spring. The mulch thing didn’t work for me either, just turned into dust by March.
Bricks as a buffer is a smart move—I’ve seen folks use pavers or even those cheap concrete edgers for the same reason. I’m with you on mulch, it just dries out and blows away by late winter. Have you tried adjusting the timer or temp settings on your mat? I found running mine in shorter bursts helped keep the grass from getting scorched, but I’m not sure if that’d make a difference for shrubs with deeper roots. Curious if anyone’s actually dug down after a season to check root damage...
I’ve actually dug down after a winter with the mats running—roots on my sedum roof didn’t seem bothered, but the grass right next to the edge got pretty crispy. Wonder if the soil type makes a difference? Clay seems to hold heat longer than loam in my yard.
Interesting—I've noticed the same thing with the grass along my walkways. The mats keep the path clear, but that strip of lawn right next to them always looks a bit fried by spring. I’ve got mostly clay soil too, and it definitely seems to hold onto heat longer than the loam in my back garden. Not sure if it’s just the soil or maybe how close the mats are laid, but either way, my grass isn’t thrilled about it. At least the snow melts fast... small wins?