Lythrum – Purple Loosestrife, Black Blood The common Purple Loosestrife (Lylhrum Salicaria) grows from 4 feet to 6 feet tall and blooms during the months of July and August. Banned by most States in the United States. The foliage is willow-like and the tall, erect, graceful spikes produce brightly colored reddish-purple flowers. The Rose Loosestrife (L. roseum superbum) has a rose-colored […]