Wild Bergamot

This aromatic herbaceous perennial is 5 to 12 dm. high and has
branched, hairy stems and spreads by seeds and
rhizomes. The opposite leaves are distinctly petioled
and deltoid-lanceolate to lanceolate and slightly
toothed. Wild bergamot has square stems with graygreen
foliage. The flowers bloom from June to
September. They are solitary and terminal on the
flowering branches and the two stamens surpass the
upper lip. The flowers are tubular, 13-15 nerved,
with lobes much shorter than the tube. The corolla is
lavender and strongly bilabiate. The upper lip is
narrow, entire, and softly pubescent while the lower
lip is broader.