Allow plants to develop at natural temperatures for normal growth. Plants grow taller at warmer temperatures. Best growth occurs at 50F-55F night temperatures. Avoid overfertilization to prevent tall, soft growth. Watch for botrytis, powdery mildew, vine weevil and slugs, which can be pests during production.
Plants have a long blooming period of six weeks.
Mature plant habit is 39 inches tall by 18 inches wide. Coppelia' performs best in full sun in the middle of island beds or back of borders. It is hardy in USDA Hardiness Zones 3 to 8 and AHS Heat-Zones 8 to 1. Powdery mildew and slugs are sometimes garden pests. Divide in the spring every three to four years.