What plants or flowers grow in the shade?
First thing to consider is that the soil under those trees many be a little worn out and lacking nutrients. So get some compost, manure or my fave cotton burr and put a good 2″-4″ layer where you want to grow the plants. Second, you need to check your zone, this will tell you what plants will tolerate you local conditions. Look at link 1. Now for plants! I love shade gardening! Perennials: Hostas-easy to grow and great foliage. Ajuga-nice ground cover with blue spring flowers. Ferns-lots of types but need to be kept moist, Japanese ferns are pretty easy. Foam flower Corabells Forget-me-Not Lungwort Monkshood Toad Lily-neat fall flowers and nice foliage Astillbe-lovely summer flower plumes-need to be kept moist Lirope or monkey grass- spreads fast, can become a pain Bleeding hearts Columbine Day lilies Lily of the valley-pretty and fragrant spring flower Ivy-can become a pain Strawberry begonia Ginger Solomons seal-real pretty but can become a pain Goats Beard Asiatic & Oriental hybred