Because the seeds of the star flower are relatively small, a tray is prepared as a seedling raising facility.
Generally, the substrate is rich in humus, well drained and sterile soil, with clay content of 10% - 20%. Some coconut fiber, perlite and other substances can be added properly. Iron chelate and micronutrient elements are also needed in the substrate, with pH value of 6.5-6.8 and EC Value of 0.75ms/cm.
The seeds are required to be sown in the hole plate or seedling plate, and one seed is sown in each hole. The hole size of the hole is 1.5-2CM.
After sowing, it germinates about 10-14 days, the growth temperature is controlled at 23 ℃ - 26 ℃, and the relative humidity in the air is kept at 100%, until the leaves grow out.
During germination, sufficient watering is needed to accelerate the dissolution of the outer layer of pollen and promote germination.
7-9 weeks after sowing, we can transplant the star flower into a pot. The best diameter of the pot is 10-15 cm. The culture medium is the peat soil with aseptic, a little fertilizer and good drainage. The pH value is 6.5-6.8.
Before sowing, one or two kilograms of fully balanced fertilizer and slow-release fertilizer are applied to each cubic meter of substrate to keep the soil fertile and provide sufficient nutrients for seeds.
In the growing stage, the relative humidity should be reduced to 50% to prevent the disease of leaves.
During germination, if the illuminance is kept at 1000 lux, the new buds will grow orderly and have high quality. After germination, the illuminance will be maintained at 10000-25000 lux. With the growth of seedlings, the illuminance should be increased to 50000 lux and the temperature should be controlled.
After germination, the seedlings should be exposed to sunlight as soon as possible to avoid the phenomenon of excessive growth and promote the rapid growth of plants.
