Springhouse gardens carries a wide variety of plants, including a good selection of ornamental grasses. They were the only nusery in the area who had old-fashioned hardy begonias when I was looking for them. Their prices are about like most other garden centers. The grounds are beautifully landscaped, with a large pond, water features, a japanese style bridge, and several gazebos - you can stroll around and just take in the beauty of it all even if you don't buy anything. The only drawback is the location is slightly out of the way, but it's worth a little extra driving.