Seed Variety

Campanula Rapido

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Data is gathered from our Elburn, Ill., trials (Zone 5a) for a North American audience. Warm-climate growers: expect 1-2 weeks earlier finishing. Cool-climate growers: expect 1 week slower. Dates based on standard 288 plug size.

Notes/Pitfall Management
Finished containers will fill out better if plugs have been grown under short days and have not initiated flowering before transplant. Provide 16hr day extension or night interruption lighting for spring finish.
Week color desired
Sow week
Plug transplant week
Early Spring
 
Quart
(1 ppp)
Gallon
(5 ppp)
 
 
 
 
 
 
 
 
Three to five plugs per 1G container
Week color desired
Sow week
Plug transplant week
Spring/Summer
 
Quart
(1 ppp)
Gallon
(5 ppp)
 
 
 
 
 
 
 
 
Campanula Rapido Blue
Campanula Rapido White
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Germination
Seed Form: PEL
PlugSize: 288
Seeds/Cell: 4
Plug Crop Weeks: 7-10
Days from 50% to maximum germination: 7-9
Cover Seed: No
Plug Production
Stage 1
Moisture: Level 4-5
Temperature: 65-72°F
(18-22°C)
Light: Optional
Stage 2
Moisture: Level 3-4
Temperature: 65-68°F
(18-20°C)
Light: 6-8 mol·m⁻²·d⁻¹
Fertilizer: Less than 100 ppm N
(Less than 0.7 EC)
Stage 3
Moisture: Level 3
Temperature: 60-65°F
(16-18°C)
Light: 6-8 mol·m⁻²·d⁻¹
Fertilizer: Less than 100 ppm N
(Less than 0.7 EC)
Stage 4
Moisture: Level 2
Temperature: 60-65°F
(16-18°C)
Light: 6-8 mol·m⁻²·d⁻¹
Fertilizer: 100 to 175 ppm N
(0.7 to 1.2 EC)
Vernalization: No
Propagation Key Tips: Avoid high EC in early plug stage – maximum 0.5 in Stages 1 and 2. Grow at less than 13 hours to keep vegetative. Spray damp-off fungicide.

For forcing info: See Perennials Forcing Guide
Growing on to Finish
Growing on Temperature: (day) 65-68°F (18-20°C)
(night) 55-60°F (13-16°C)
Target Media pH/EC (1:2): 5.6-6.2 pH
1.0-1.3 mmhos/cm
Fertilizer: 100 to 175 ppm N
(0.7 to 1.2 EC)
Daylength: Obligate Long Day
Daylength Notation: Long day required (14 hours or 4-hour NI) until buds are visible.
Fertilizer Notation: Moderate fertilization needed. Apply fertilizer rate 2 (100 to 175 ppm N).
Finishing Key Tips: Moist, well-drained medium. Growing too cool delays both plug and finished plant. Long day Summer decreases plant bulk. Use more plugs per container compared to Spring.