Haha, polymeric sand definitely has that "too perfect" vibe sometimes—like when someone shows up overdressed to a backyard BBQ. Your moss-seed idea sounds pretty cool though, I've seen it done and it really softens the patio edges nicely. One thing I'm curious about is how slippery it gets when wet? I've had a few clients who've gone with creeping thyme between stones for that natural look, smells awesome too...but traction can be hit or miss.
"One thing I'm curious about is how slippery it gets when wet?"
I've wondered about that too...from my experience, moss can get pretty slick when soaked, especially in shady spots. Maybe mixing in some grit or sand underneath could help with traction? Has anyone tried something like that?
I've actually done the sand trick myself—it works pretty well. Just sprinkle a thin layer under the stones or mix it into the grout. Cheap and effective, though it won't totally eliminate slipping...but definitely helps in shady, damp spots.
I've heard about the sand trick a lot and it seems decent, but honestly, I found that mixing in some fine gravel or crushed stone dust works even better. Did it on my patio last summer—definitely reduced slipping more noticeably than sand alone. Sand helps for sure, but it washes out pretty easily after heavy rains...at least that's been my experience. Might be worth trying if you're still having issues with dampness.
Yeah, gravel mix definitely holds up better than sand alone. I tried sand first and ended up with a mini beach after every storm...gravel solved that quick. Plus, less sweeping afterward, which is always a win.