# August Beauty’ grows 4 to 6 feet high and blooms heavily from midspring to fall.
# ‘Chuck Hayes’ is an extra hardy type to 4 feet high with double flowers in summer.
# ‘First Love’ is larger than ‘August Beauty’ with large flowers in spring.
# ‘Golden Magic’ reaches 3 feet tall and 2 feet wide, and has golden yellow flowers.
# ‘Kleim’s Hardy’ is hardy to 10 ° F and grows to 3 feet tall with single flowers in summer.
# ‘Mystery’ is the best-known selection. It has 4-to 5-inch double white flowers and can reach 6 to 8 feet.
# ‘Radicans’ grows to only 12 inches tall and spreads 2 to 3 feet, with small, dark green leaves and inch-wide double flowers in summer. It is not very cold hardy.
# ‘Daisy’ is a more cold hardy variety recommended for the Upstate of South Carolina.