Vegetative Variety

Iberis Summer Snowdrift

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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
Spring/Summer
 
Gallon
(1 ppp)
 
 
 
 
*URC typically arrive with flower buds due to cool nights in Colombia. If not, cuttings will require long day lighting to flower before week 20.
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: Low to moderate
Fertilization: 50-75 ppm N when roots become visible
Pinching: Recommended after roots are established. Leave active internodes.
Transplanting: 28-35 days after sticking
Comments: Use low mist settings; do not oversaturate rooting media. Root zone temperatures of 70°F (21°C). Remove flowers in propagation. Cuttings typically arrive with flowers already induced due to cool night temperatures in Colombia. Non-induced cuttings require 6 weeks of night temperatures below 55°F (13°C) to flower.
Finishing Guide
Media pH: 5.8-6.2
Temperature: Nights: 45 to 55°F (7 to 13°C) Days: 55 to 65°F (13 to 18°C)
Light: 3,000 to 5,000
Vernalization: Cuttings supplied from Darwin Colombia receive enough cold to induce into flower, so growers will not need to vernalize.
Daylength: Day length neutral
Watering: Allow media to dry regularly between watering.
Fertilization: Use a balanced fertilizer at a rate of 125 to 150 ppm.
Pinch After Transplant: Recommended
Plant Growth Regulators: PGRs generally not needed
Pests and Fungal Diseases: May experience root rot diseases under poor growing conditions. Aphids.