Iberis can either be hardy annuals or perennials; this section is dedicated to the perennial varieties of Iberis. Go to this page for further information on: annual Iberis.
The Perennial plants are low growing spreaders that have a woody nature. This makes them ideal plants for in rock gardens and for trailing over walls.
Iberis sempervirens by TANAKA Juuyoh (田中十洋).
Iberis reach a height of between 15 and 30 cm (6 to 12 inches), and flower in the middle of spring with tiny white flowers. The common name for Iberis is Candytuft.
Iberis sempervirens (Evergreen candytuft / Perennial candytuft), photograph by Alvin Kho; CC.
Iberis umbellata (Garden candytuft / Globe candytuft), picture by Forest and Kim Starr; CC.
Iberis amara (Wild candytuft / Rocket candytuft / Bitter candytuft), photograph by Val Def; CC.
Perennial Candytuft – Iberis – can be started outdoors from seed. Sow the seeds at a depth of 6 mm (1/4 inch). This can be done either before the last frost of spring or in the autumn.
Iberis can grow in either sunny or partially shaded areas of the garden. They prefer to grow in a rich soil that has a pH of 6 to 7.5 and good drainage.
If you first want to grow candytuft indoors, then start about two months before you expect the last frost of spring.
They will take from two to eight weeks to germinate at a temperature of 12 to 17 degrees Centigrade (54 to 63°F).
Once ready, transplant the Candytuft seedlings into the garden using a spacing of 30 to 60 cm (12 to 24 inches) following the last frost of spring.
Once growing candytuft and other Iberis species are easy to look after. It is important to keep the soil fairly moist. Trim the plant following flowering to keep up appearances.
If you require more perennial Iberis plants, then cuttings can be taken after flowering has finished, or the plants can be divided in the autumn.