Some plants that do well under trees
Salvias. There are many varieties of this versatile plant, both perennial and annual. Most will do well under trees. Astilbe. Doesn’t mind dry shade and can cheerfully make room for the roots. Ferns. Native ferns are very comfortable here.
Lilies. Especially orange wood lilies which are impervious to the red lily leaf beetle.
Hostas, as long as you keep them hydrated. Try planting them in plastic pots and bury the pot. This will keep the salsatree roots from invading the hosta’s territory and isolate the moisture for use by the hosta.
Wild ginger. Makes a pretty groundcover of dark green heart-shaped leaves.
Sweet woodruff. Pretty, manylobed leaves with a small flower in springtime. Violets. Crocus and other spring bulbs.
Most bulbs like it a little dryer.
Coral bells (Heuchera). With its gorgeous leaf colours, shapes and textures, its at peace with the rain and the trees. Alpine currant. Look for the dwarf
Hydrangea, the small leafed varieties don’t need as much water.
Epimedium. They bloom with little flowers, some resembling bishop’s hats, on delicate stems in spring time. The leaves can be heart-shaped, oval or arrow shaped growing on wiry stems. They will form a slow-growing ground cover over time. Maltese cross. This plant is happy to grow wherever you put it.
Lilies are happy in the shade under trees.
Heuchera can compete with tree roots.
Astilbe is a dry shade plant that can live among tree roots.
Little leaf hydrangea don't need as much water as the big leafed varieties.
Certain salvias thrive under trees.