GENERAL INFORMATION
Scientific Name: Iberis sempervirens
CommonName: Evergreen Candytuft
Hardiness Zone: 4a - 9a
Hardiness Degree: -30°F (-30°C)
Blooming Season: Early Spring, Spring
Plant Habit: Mounded
Characteristics: Frost Tolerant
Water: Medium
Fertilizer: None or when needed only
Spacing: 10 - 12" (25 - 30cm)
Height: 6 - 8" (15 - 20cm)
Width: 10 - 12" (25 - 30cm)
Exposure: Sun
PROPAGATION
Media EC/pH: EC 0.80 mmhos/pH 5.8-6.2
Soil Temperature: 68-72°F (20-22°C)
Rooting Hormone: 300 ppm IBA
Mist: Low to moderate
Fertilization: 100 ppm N starting at Day 10
Pinching: Yes, pinch after 4 weeks. Can be double pinched in the liner stage for even greater branching.
Transplanting: 42-49 days after sticking
FINISHING
Media pH: 5.8-6.2
Temperature: 45 to 60°F (7 to 16°C)
Light Level (fc): 3,000 to 5,000
Vernalization: Yes
Daylength: Day length neutral
Watering: Low to moderate
Fertilization: Use a balanced fertilizer at a rate of 150 to 175 ppm N.
Pinch After Transplant: Only if pinching not done in the liner stage.
Plant Growth Regulators: PGRs generally not needed
Pests and Fungal Diseases: Not particularly sensitive.
CROP SCHEDULING
1–qt. (10–cm) pot, 1 plant per pot: 24 wks; requires vernalization
1–gal. (15–cm) pot, 1 plant per pot: 24 wks; requires vernalization
2 to 3–gal. (25 to 30–cm) pot, 3 plants per pot: Not recommended
Bloom Months: February to April