Cultural Information for: Campanula Appeal
Optimum Germination Temperature: 18-20°C
Optimum Growing Temperature: 13-15°C
Optimum pH: 5.8 – 6.2
EC – Plug: 0.26 – 0.75 mmhos/cm (1:2) / 0.76 – 2.0 (SME)
EC – Finishing: 0.76 – 1.25 mmhos/cm (1:2) / 2.1 – 3.5 (SME)
Plug Culture – 5 weeks (288 / 12 x 24 tray)
Stage One (days 1-10)
Single sow pelleted seed into a 288-plug tray using a sterile and well-drained media.
Cover the seed lightly with vermiculite and maintain high humidity and enough moisture to melt the pellet.
Optimum germination temperature is 18-20℃ .
For the highest germination, maintain an even temperature of 68F/20C for four days after sowing.
Stage Two (days 11-21)
After the seedlings emerge, place the plug flats in a bright and cool greenhouse with good air circulation.
Apply a light feed of 100 ppm Nitrogen using a well-balanced fertilizer.
Maintain moderate air temperatures, 20-22℃ , to avoid stress and prevent rosette.
To prevent pre-mature flower bud initiation, provide short day conditions in the plug stage (less than 11 hours) by using black out material.
Stage Three (days 22-34)
Seedlings are beginning to fill in the plug tray.
Maintain short days and fertilize as needed to maintain a media EC of 0.26 to 0.75 mmhos (1:2 slurry) using a well-balanced fertilizer.
The use of a calcium nitrate-based fertilizer is beneficial in helping to build strong and healthy transplants.
Stage Four (day 35) Seedlings should now have 2-3 true leaves and are now ready to transplant into pots.
Transplanting to Flower 14 weeks
Days 36-56 (3 weeks)
Place one plant per 6 inch/15 cm pot using a well-drained organic media.
Maintain short day conditions* (less than 11 hours) and grow the plants at 68F/20C for three weeks to establish.
Fertilize the pots weekly with 150 ppm of a well-balanced Calcium Nitrate-based fertilizer.
*Note be sure to maintain short day conditions (less than 11 hours) from sowing and continuing after transplanting for at least 3 weeks.
The plants should be fully rooted with 8-10 true leaves covering the pot prior to flower bud initiation.
Days 57-70 (2 weeks)
The plants are established and ready for flower bud initiation.
Drop the temperature to 10-12℃ and provide long day treatment for 2 weeks (total 16-hour day length).
Night interruption from 10 pm to 2 am works well using incandescent (mum) lighting.
For fuller pots and a rounder look make a soft pinch as the plants begin to elongate vertically.
Days 71-98 (4 weeks)
Maintain cool temperatures of 10-12℃ but stop day length manipulation (turn off the lights).
This will help keep the plants more compact and promote better branching.
Campanula Appeal is naturally dwarf but applying B-Nine 2 weeks after stopping long day treatment promotes a more compact plant.
Days 99-133 (5 weeks)
Raise the temperature to 15℃ .
Day 134 (19 weeks from sowing)
Pots should begin flowering.
Pots can be sold in the bud stage (big and puffy) as the buds will open nicely indoors; especially if placed near a lamp or bright window.
Note:
Sowing schedule is totally dependent upon the ability to maintain optimum temperatures.
In mid to late spring the longer photoperiod, higher light levels and warmer temperatures will accelerate flowering.
출처 : SAKATA ORNAMENTALS
