Cultivation techniques
Potting soil
It is advisable to use fertile sandy soil, first small pots and then large pots, after 2-3 times of potting, July can be fixed pots; fixing pots can be used for 6 parts of rotting soil, 3 parts of sandy soil and 1 part of cake fertilizer residue formulated into a mixture of soil. After watering thoroughly put in the shade, after the plant grows normally move to the sunny place.? [12]?
Watering
Spring chrysanthemum seedlings are young, watering should be less; summer chrysanthemum seedlings grow up, the weather is hot, the evaporation is large, watering should be sufficient, can be watered in the early morning, and then watered once in the evening, and should be sprayed with sprinklers to chrysanthemum branches and leaves and the surrounding ground to increase the humidity of the environment; before autumn, we should control the water and fertilizer appropriately in order to prevent the plants from running high and growing wild. After autumn, before flowering, we should increase the watering amount and start fertilizing, and the fertilizer will be gradually thickened; in winter, the flower branches basically stop growing, and the water consumption of the plant is obviously reduced, and the evaporation amount is small, and the watering should be strictly controlled.
Watering is best done slowly with a watering can, not with fierce water. Watering in addition to the season to determine the amount and frequency, but also according to the weather changes and changes. Rainy days to less water or not water; high temperatures and evaporation should be more water, and vice versa to less water. Generally in the flower watering, to see the potting soil becomes dry and then water, not dry not water, watering is watering through. But do not make the flower pot wang water, otherwise it will cause rotting roots, leaves yellow, causing plant death.
Fertilization
When the chrysanthemum plant is planted, the pot should be fully fertilized. Nitrogen fertilizer can be applied every 10 days. After the autumn since the chrysanthemum buds to buds, you can once a week to apply a slightly thicker fertilizer; buds to be released, and then apply a strong fertilizer, that is, suspend the fertilization. If you can give chrysanthemums a calcium superphosphate or 0.1% potassium dihydrogen phosphate solution, the flowers can bloom more brightly.
Centering and bud thinning
When the chrysanthemum plant grows to more than 10 centimeters high, it will start centering. Leave only 4-5 leaves at the base of the plant and remove all the upper leaves. To grow 5-6 new leaves, and then remove the heart, so that the plant retains 4-7 main branches, after the growth of branches, buds should be removed in a timely manner. The heart removal can make the plant branching, effectively control the height and shape of the plant. The last time of centering, the chrysanthemum plant should be shaped pruning, remove too many branches, too strong and too weak branches, retain 3-5 branches can be. September buds, to remove the lower end of the plant buds, each branch to leave only the top of a bud.
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Growing Conditions
Chrysanthemums are short-sun plants. The chrysanthemum is a short-sunlight plant, and can bloom earlier under short sunlight. Prefer sunlight, avoid shade, more drought-resistant, afraid of flooding. Prefer warm and humid climate, but also cold, severe winter rhizomes can overwinter in the ground. Flowers can withstand frost, but seedling growth and branching buds need higher temperatures. The optimal growth temperature is about 20 ℃.
Chrysanthemum's adaptability is very strong, like cool, more cold-tolerant, growth temperature 18-21 ℃, the highest 32 ℃, the lowest 10 ℃, underground rhizomes of low-temperature limit is generally a 10 ℃. Flowering minimum night temperature of 17 ℃, flowering (in, after) can be reduced to 15-13 ℃. Prefer full sun, but also slightly shade-tolerant. More tolerant of dryness, most avoid waterlogging. Prefer high and dry terrain, deep soil, rich in humus, easily fertile and well-drained sandy loam.
In slightly acidic to neutral soil can grow, and PH6.2-6.7 is better. Avoid continuous cultivation. Autumn chrysanthemum is a long night day plant, in the 14.5 hours a day under long sunlight for stem and leaf nutrient growth, more than 12 hours a day of darkness and 100 degrees Celsius night temperature is suitable for the development of flower buds. But different varieties have different responses to sunlight.
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