Blue Vervain

Notes:

Blue Vervain Verbena hastata has stiff erect stems with panicles of elegant flower spikes. The tiny tubular shaped blossoms open at the base of the spike first and gradually move up the spike giving a very long season of bloom. For six weeks in July and August the blue/violet flowers delight us and are a treat for bees and butterflies too. The leaves are opposite, lance shaped and sharply toothed. They are 5-10 cm long (2-4”). The plant grows 90-130 cm tall (3-4 ½ ft). It generally remains around 90 cm in heavy clay soil and grows taller in looser, very moist soil.