Vegetative Variety

Eupatorium dubium Little Joe

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Data is gathered from our West Grove, Pa., trials (Zone 6a). Southern growers: expect 1-2 weeks earlier finishing. Northern growers: 1 week slower. Consider summertime scheduling accurate. Dates based on a standard 72 liner size.

Week color desired
URC stick week
Liner transplant week
Late-Summer/Fall
 
Gallon
(1 ppp)
 
 
 
 
Propagation Guide
Media EC/pH: EC 0.75-0.80 mmhos/pH 5.8-6.2
Temperature: 70-72°F (21-22°C)
Rooting Hormone: 500 ppm IBA
Mist: High for first few days, then reduce to moderate.
Fertilization: 50-100 ppm N
Pinching: Recommended.
Transplanting: 42-49 days after sticking
Finishing Guide
Media pH: 5.8-6.2
Temperature: Nights: 55 to 65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C)
Light: 5,000 to 8,000
Vernalization: No
Daylength: Long day obligate
Watering: Allow media to dry moderately between watering. Prefers moist soils.
Fertilization: Use a balanced fertilizer at a rate of 125 to 150 ppm.
Pinch After Transplant: Recommended
Plant Growth Regulators: Concise/Sumagic 30-60 ppm spray
Pests and Fungal Diseases: None noted