Appalachian Mountain Mint is rather mis-named since it is not a mountain species but rather prefers wet meadows and marshes in the southern coastal plain and, occasionally, piedmont. Some sources call it Savannah Mountain Mint which is more apropos but less well known. The confusion may stem from some old publications that used to list this species as synonymous with P. tenuifolium which it clearly is not. This species has small but broad leaves and grows between 2-3 feet tall. It will spread though not as aggressively as some mints. Preference is for full to part sun and moist sandy soil. Flowers have pronounced, narrow, silvery calyx lobes which might be confused for the flower itself. These give the plants flowers the appearance of light, fluffy, silver clouds (more like a Thalictrum than Pycnanthemum). Flowering occurs July-August. Zone 4-8. Unknown ecotype. // Seed packet, about 100 seeds. Germination requirements: 60 days cold, moist stratification.