That's a good question. RR used to have a super-soil room and their motto is(was?) "Premium Organic Cannabis". But it was garbage the 6 months I was a member there and when they went Rec shit went even further down the rabbit hole. Also Dredd left them so god only knows at this point, lol.
L'Eagle used to front 100% organic grown and promote the shit out of their IWE hash. I went there once and the bud all smelled the same(like crap) and the IWE was garbage, I still have the rest of that gram somewhere, lol.
Honestly, I'm not sure that anyone uses organics outside of home growers(my garden is FIRE, lol). I do know that Kind Love uses organic pest prevetion and fungicides(bc of the list on every bottle) but I'm not sure about their nutes. Just do yourself a favor and get stuff from them, they fell off when they sold the place but even with that they still have the best flowers, in quality, flavor, and potency.