GENERAL INFORMATION
Scientific Name: Helianthus salicifolius
CommonName: Narrow-Leaved Sunflower
Hardiness Zone: 5a - 10a
Hardiness Degree: -20°F (-20°C)
Blooming Season: Autumn
Plant Habit: Mounded
Characteristics: Drought Tolerant, Rabbit Resistant, Low Maintenance
Water: Light
Fertilizer: Once a month
Spacing: 24 - 26" (61 - 66cm)
Height: 24 - 26" (61 - 66cm)
Width: 20 - 24" (51 - 61cm)
Exposure: Sun
PROPAGATION
Media EC/pH: EC 0.80 mmhos/pH 5.8-6.2
Soil Temperature: 70-74°F (21-23°C)
Rooting Hormone: 500 ppm IBA
Mist: Low
Fertilization: Feed at 100 ppm N after 9 days
Pinching: Pinch once shoots elongate for best branching.
Transplanting: 35-42 days after sticking
FINISHING
Media pH: 5.8-6.2
Temperature: 55 to 70°F (13 to 21°C)
Light Level (fc): 5,000 to 8,000
Vernalization: No
Daylength: Short day obligate
Watering: Low to moderate
Fertilization: Use a balanced fertilizer at a rate of 150 ppm N.
Pinch After Transplant: Typically not necessary if plants were pinched in the liner.
Plant Growth Regulators: PGRs generally not needed
Pests and Fungal Diseases: Very pest and disease resistant.
CROP SCHEDULING
1–qt. (10–cm) pot, 1 plant per pot: Not recommended
1–gal. (15–cm) pot, 1 plant per pot: 12-14 wks. Plant Week 22-26
2 to 3–gal. (25 to 30–cm) pot, 3 plants per pot: 12-14 wks. Plant Week 22-26
Bloom Months: September to November