About Water Horehound: This wetland plant belongs to the mint family, though it has no relation to the herb used to make old-fashioned horehound candy. The word “horehound” most likely comes from a variation of “hara-hune,” or “hare’s honey.” The common name Gypsywort comes from its use to make a permanent dark dye; according to legend, gypsies once used the dye to darken their skin.
Water Horehound Germination: Plant the seed as soon as the soil can be worked in the spring. Direct sow on the surface of the soil, since this seed needs light to germinate. Keep the soil lightly moist until germination, which may take 8-12 weeks.
Growing Water Horehound Seeds: Keep seedlings moist and free of weeds. Mature plants prefer moist soil, and may need watering in dry weather. This plant can thrive even in soggy soil or clay, and often spreads by rhizomes to form colonies.
Harvesting Water Horehound: These blossoms do not perform well as cut flowers, and are best enjoyed outdoors.
Saving Water Horehound Seeds: After the flowers fade, papery pods will form that eventually split open and release their seed. Gather the ripe seed as soon as the pods open to prevent loss. Store the seed in a cool, dry place.
Detailed Water Horehound Info: Origin: US Native Wildflower Other Common Names: American Bugleweed, Gypsywart Duration: Perennial Bloom Time: Late Summer Height: 18-36 inches Spacing: 6-12 inches Light: Full Sun Soil Moisture: Wet USDA Zone: 3a-11 Seeds Per Oz: 183,000 Produces an unbranching plant with square stems, toothed blade-shaped leaves, and whorls of small white flowers around the stem.