Miscanthus floridus GIANT MAIDEN GRASS Seeds! Miscanthus floridus Giant Maiden Grass Up for bid are seeds of the Giant Maiden Grass. It is a beautiful perennial grass that is quite popular. The plant grows up to 12 feet tall gets unique graceful seed heads in late summer to fall and great green foliage all summer. Maiden Grasses are typically hardy to zone 4. These beautiful plants grow best in full sun to part shade. They would make excellent additions to your rare plant collection, or just make a unique statement in your yard. You are bidding on 10 seeds of Miscanthus floridus.