Where I’m at, we’re actually getting a decent amount of solar, but unfortunately the power district is building the solar fields over some remnant tallgrass prairie, probably since it’s cheaper than buying agricultural or residential land. This sucks since we’ve destroyed 98% of all the tallgrass prairie in the US, which makes it one of the most endangered biomes in the world, which is extra sucky since tallgrass prairie is one the most effective biomes at sequestering carbon, much more than even forests/woodlands.
I haven’t tested/verified this myself but I’ve heard that mycelium grows particularly well on millet and rye berries. Might be a couple to add into your experimenting.