GENERAL INFORMATION
Scientific Name: Helenium autumnale
CommonName: Sneeze Weed
Hardiness Zone: 4a - 9a
Hardiness Degree: -30°F (-30°C)
Blooming Season: Summer, Autumn, Late Summer
Plant Habit: Columnar
Characteristics: Attracts Bees, Attracts Butterflies, Deer Resistant, Drought Tolerant, Heat Tolerant
Water: Light
Fertilizer: Once a month
Spacing: 14 - 16" (36 - 41cm)
Height: 14 - 16" (36 - 41cm)
Width: 12 - 14" (30 - 36cm)
Exposure: Sun
PROPAGATION
Media EC/pH: EC 0.75-0.80 mmhos/pH 5.8-6.2
Soil Temperature: 70-72°F (21-22°C)
Rooting Hormone: 1,000 ppm IBA
Mist: Moderate
Fertilization: 50-75 ppm N
Pinching: Pinch once in the liner stage.
Transplanting: 42-49 days after sticking
FINISHING
Media pH: 5.8-6.2
Temperature: Nights: 55 to 65°F (13 to 17°C) Days: 60 to 80°F (15 to 27°C)
Light Level (fc): 5,000 to 8,000
Vernalization: No
Daylength: Long day obligate
Watering: Allow media to dry moderately between watering.
Fertilization: Use a balanced fertilizer at a rate of 125 to 150 ppm.
Pinch After Transplant: Yes
Plant Growth Regulators: PGRs generally not needed
Pests and Fungal Diseases: Spider mites, thrips
CROP SCHEDULING
1–qt. (10–cm) pot, 1 plant per pot: Not recommended
1–gal. (15–cm) pot, 1 plant per pot: Rooted: 10-12 wks
2 to 3–gal. (25 to 30–cm) pot, 3 plants per pot: Rooted: 10-12 wks
Bloom Months: July to September