Last week I talked about some of the white spring flowers, but a whole array of white flowers bloom well into the fall. I can only mention a few. White Flowers for Summer One of the more unusual white flowers that grows in my garden is Artemesia lactiflora. Most of us think of artemesias as having silvery foliage and insignificant flowers. My Artemesia lactiflora grows in a very upright clump with reddish-maroon stems and very dark toothed foliage.…