Violet perennial herb with long or round lanceolate leaves, purple-red flowers, reddish, yellowish or white, with aroma and slender fruit. For viewing. How to make violets bloom in all seasons?
(l) Choose different types of violets. Such as spring violet, summer violet, autumn violet, adopt the staged sowing method, there will be flowers in the warm area from spring to autumn.
(2) Use different sowing dates to extend the flowering period. If planted in the greenhouse in early February, it can bloom in May; in the greenhouse, it will be planted in late February to March, and it will bloom in June; in April, it will be planted in July, and will be planted in July. Flowering in the month; planting in the second half of July of the previous year, it can bloom indoors from February to March of the following year. The sowing temperature is 16~18 °C, and the seedlings should not be too dense, otherwise the seedlings are vulnerable to the disease. In addition, some tall varieties of flowers after the flower cut off the residual flower branches, timely application of 1 or 2 times of top dressing, can reproduce the side branches, can bloom again.
Violet can also be used to cause flowering:
(1) Electric lighting. Violet is a long-day plant, and winter greenhouse cultivation can promote flowering by extending the light. From the time when the flower bud can be seen from the heart of the leaf, until the flowering, the electric light is turned on every day after sunset, and the light is extended for 4 to 5 hours, or 2 to 3 hours of light in the middle of the night. It is advisable to install the light lamp about 1 meter above the top of the plant.
(2) Gibberellin treatment. Before and after flower bud differentiation and in the middle and early November of the differentiation, spraying the flower buds with 50 ml/L of gibberellin also produced an effect of promoting flowering.
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