Teasel, or dipsacus fullonum, is an erect biennial that reaches 6.5 feet tall. It is primarily a weed that is found on roadsides, hayfields, pastures and turfgrass. It has small prickles on the stem and tall flowering stalks. Common teasel blooms from June to October with purple flowers, and cut-leaved teasel will bloom from July to September with white flowers. Once the rosette flowers, the plant dies.
Plant teasel in gardens that get a lot of sun. It won't do as well in shaded areas and may wilt and die.
Keep the soil moist, but don't over water or you may cause root rot. Teasel needs regular watering, about every 2 to 3 days.
Protect from teasel overgrowth by pulling the plants you don't want in the garden. Teasel can be very invasive and will spread to all parts of your garden in no time.
Mulch around the teasel as winter sets in if you want to help it retain moisture and thrive through the winter. Add 2 to 4 inches of mulch around the crown of the plant.