This loosestrife is found in wet prairies, fens, and bogs, although only in those that have not been disturbed by agriculture or other development. The flowers are a bright yellow and droop slightly. The foliage is thin and a light green color. It is commonly found with Asclepias incarnata, Scirpus atrovirens, and Symphyotrichum novae-angliae in prairies, and with Carex viridula, Solidago patula, and Sporobolus heterolepis in fens. This species is quite attractive to a variety of bees.