English mallow flower
image by Alberto Salguero, http://en.wikipedia.org/wiki/File:Althea_officinalis_flor.jpg
English mallow grows in marshy areas across the UK and other parts of Europe. It is related to hollyhocks, with similar tall stalks often reaching 3-5 feet in height, and delicate pink flowers. English mallow is a perennial, although only the roots keep growing during the winter while the rest of the plant dies back. This is a lovely addition to any garden, as long as you live in a very damp climate.
Choose a spot to plant your English mallow. English mallow needs full sun and rich moist soil in which to thrive, similar to the marsh environment to which it is native.
Plant the English mallow seeds in late fall or early winter. Dig a trench about 5-6 inches deep and 5-6 feet long in which to sprinkle the seeds. Water after planting. Make sure the soil is constantly moist. The trench may be longer if you want more English mallow.
Thin the sprouts when they are 6 inches tall to 1 foot between each stalk. As they grow larger, about 2 feet tall, thin to 2 feet between each stalk.
Water your English mallow once a day for 10 minutes each watering, unless the ground is already wet enough. Keep the ground constantly moist around the base of each stalk.
Trim back the dead stalks in the winter to aid spring growth.