FINISHING GUIDE / CUT FLOWERS
RECOMMENDED PLUG SIZE
STEM LENGTH
KEY TIPS
288
18 in. (46 cm)
Optimal stem length can be achieved with cool growing conditions (53 to 58°F/12 to 14°C). If flowering too short while maintaining optimal temperatures, reduce light intensity.
288
22-28 in. (56-71 cm)
288
30-34 in. (76-86 cm)
To ensure sufficient vegetative growth and stem length, use short day grown plugs. Best practices for producing cut flower Campanula Campana must be followed to assure best stem length and strength, and to control the timing of bud set. When transplanting under long or increasing daylength, make sure plants have short days (<13 hours) for 4 to 5 weeks, using black cloth where needed. Follow that with natural long days (>14 hours) for production finish. When transplanting under short days, give plants natural short days (13 hours) for 4 to 5 weeks, followed by daylength extension to long days (>14 hours) for production finish. Mum lighting from 10 p.m. to 2 a.m. can be used. Maintain a medium moisture level. To reach sufficient stem length, Campanula medium needs adequate moisture and fertilisation. Dry growing conditions will cause early flowering and reduced stem length. However, overwatering will cause weaker stems and root systems, which will cause plants to fall over.
Direct sow
32-40 in. (81-102 cm)
Harvest timing is affected by heat and light quality, and reflects direct sow method. If desired, apical bud can be removed to ensure more buds opening at the same time.
288
30-48 in. (76-122 cm)
Celosia makes a taproot and is sensitive to root damage, which will result in early bud formation, deformed flowers and less uniformity. Therefore, plant before the plugs get rootbound. Maintain a constantly moist media, especially for the first 2 weeks after transplanting, to prevent premature flowering.
288
28-40 in. (71-102 cm)
We recommend giving the plants a short-day treatment for 3 to 4 weeks after transplant for the best uniformity and quality crop. After the short-day treatment, plants can be grown in long days. Celosia makes a taproot and is sensitive to root damage, which will result in early bud formation, deformed flowers and less uniformity. Therefore, plant before the plugs get rootbound. Maintain a constantly moist media, especially for the first 2 weeks after transplanting, to prevent premature flowering. Before flower development, temperatures 65-75°F (day) 63-65°F (night) are recommended. Better flower quality is achieved if greenhouse temperatures are lowered as flowers develop. Not recommended for pinch. Celosia makes a taproot and is sensitive to root damage, which will result in early bud formation, deformed flowers and less uniformity. Therefore, plant before the plugs get rootbound. Maintain a constantly moist media, especially for the first 2 weeks after transplanting, to prevent premature flowering. Before flower development, temperatures 65-75°F (day) 63-65°F (night) are recommended. Better flower quality is achieved if greenhouse temperatures are lowered as flowers develop. Do not pinch Spring Green.
288
24-40 in. (61-102 cm)
288
28-40 in. (71-102 cm)
Celosia makes a taproot and is sensitive to root damage, which will result in early bud formation, deformed flowers and less uniformity. Therefore, plant before the plugs get rootbound. Maintain a constantly moist media, especially for the first 2 weeks after transplanting, to prevent premature flowering. Before flower development, temperatures 65-75°F (day) 63-65°F (night) are recommended. Better flower quality is achieved if greenhouse temperatures are lowered as flowers develop.
288
20-35 in. (51-89 cm)
Planting density: Annual greenhouse production = 12 to 16 plants/m². Annual field production = 16 to 18 plants/m². Perennial field production = 9 plants/m². Do not pinch. Fertilise frequently with well-balanced fertiliser. Avoid ratio N:K larger than 2. Irrigation: overhead only first 4 to 6 weeks, then use drip. Needs medium to high irrigation, but keep plants dry and low RH. Prefers high light conditions. Cut stems 6 in. (15 cm) above ground to prevent Root Rot. Harvest when 25 to 30% of flowers are open. For annual cycle: from early transplant (January/February); first harvest after 12 to 15 weeks; then next 1 or 2 harvests 5 to 6 weeks later. Second and third harvests give best quality stems. Autumn: greenhouse 13 weeks, field 16 weeks. Spring: greenhouse 11 weeks, field 13 weeks. Treat cut stems with an ethylene-inhibiting agent. In temperate areas such as coastal California, plugs are generally transplanted into the field August through October, and February to early May. Autumn transplants will flower the following Spring (February onward); Spring transplants flower late Spring.
288
30-39 in. (76-99 cm)
129
+1 630 231-1400 • panamseed.com / FINISHING GUIDE
Powered by FlippingBook