VERBENA OFFICINALIS GRANDIFLORA
Dense bunches of erect, wiry, constantly dividing stem hold branched clusters of purple flowers, which open over a very long period from early summer into autumn. Too rarely seen, this quite dwarf plant, which produces very few leaves to obstruct the blossoms, is much loved by butterflies and bees.
For best results, sow immediately onto a good soil-based compost. Cover the seeds with fine grit or compost to approximately their own depth. They can be sown at any time, and germination can sometimes be quicker if kept at 15 to 20 degrees C. We sow most seeds in an unheated greenhouse and wait for natural germination, as many seeds have built-in dormancy mechanisms, often waiting for natural spring germination, hence giving them a full season of growth.