Hollyhock double Dwarf The best time to sow hollyhock seeds undercover is winter . You can sow the seeds directly outdoors If you have bought hollyhocks as plants in pots or raised them from seed, they can be planted out. They flower the following year after planting. Hollyhocks are easy to grow, although many varieties are biennial and take two years from seed to flower. Some bloom the first year if planted early enough, and other varieties are considered to be short-lived perennials.
