I would rule out zoysia if less than 6 hours of direct sunlight per day.. Also plant wildflowers in the sunniest locations. Clover should do well esp if shade tolerant variety is planted. I like really like the clover because of the deer it brings in. Check around but here there are some shade tolerant varieties of wildflowers that may work like astilbe and liriope Just not sure if they are zoned for Neb
