Globe candytuft (Iberis umbellata) is a common garden annual that bears flat clusters of pink, violet, white, purple, or red flowers in late summer. The plants are 40 cm (16 inches) tall and have long, narrow leaves.
Light. 'Purity' candytuft will tolerate some shade but bloom best when planted in the sun. For zone 8, all varieties of candytuft will benefit from a spot where the flower will have partial shade in the afternoon during the hottest part of the day, especially during the heat of summer.
Although this plant doesn’t quibble about the type of soil it is in, better add fertilizer when growing Iberis in pots.
Cut back by about a third of the year’s growth, or even half. Make sure you’re still in the “green growth” zone, though.
It is drought-tolerant once established. It prefers a well-drained site, so heavy clay soils that stay wet in winter should be avoided. It is not easily divided. Iberis sempervirens survives in USDA hardiness zones 3-9 with mean annual minimum temperatures of -23.3 to -20.6 °C (-10 to -5 °F). .
These plants may cause serious illness or death. Candytufts can reach a height of about 30 cm (12 inches). It can spread up to 6 inches (15 cm). The white or pink flowers brighten the gardens during the months of April and May.
