Vegetative Variety

Viola Halo

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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
(1 ppp)
Week color desired
URC stick week
Liner transplant week
(1 ppp)
*Plantings after week 23 finish faster
Viola Halo Golden Yellow
Viola Halo Lemon Frost
Viola Halo Lilac
Viola Halo Sky Blue
Viola Halo Violet
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Propagation Guide
Media EC/pH: EC 0.80-1.0 mmhos/pH 5.5-5.8
Soil Temperature: 70-72°F (21-22°C)
Rooting Hormone: 500-750 ppm IBA
Mist: Moderate for first 24-48 hours, then reduce to low.
Fertilization: 50-75 ppm N at Day 7
Pinching: Soft pinch recommended 25-28 days after sticking.
Transplanting: 35-42 days after sticking
Comments: Excessive media moisture will slow rooting. Begin fertilizing at Day 7 with 75 ppm N.
Finishing Guide
Media pH: 5.5-5.8
Temperature: Nights: 50 to 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C)
Light Level (fc): 5,000 to 8,000
Vernalization: No
Daylength: Day length neutral
Watering: Allow media to dry slightly between watering.
Fertilization: Use a balanced Pansy/Viola fertilizer at a rate of 125 to 150 ppm.
Pinch After Transplant: Recommended
Plant Growth Regulators: PGRs generally not needed
Pests and Fungal Diseases: Watch for thielaviopsis, pythium, white fly, spider mites.