Found growing on the grounds of the Camp David Presidential Retreat in Catoctin Mountain Park in Maryland, Cornus florida'Appalachian Spring' Flowering Dogwood proved itself highly resistant to anthracnose, the bane of many Dogwoods. A relatively fast and upright grower, this small ornamental tree produces large white bracts that show splendidly against green foliage, which turns reddish-purple in autumn.