Planting Gladiolus should choose sandy soil, deep soil layer, good drainage, not easy to water.
The best choice for flowerpots is plain fired pottery basin or plastic basin with holes at the bottom. If it's convenient for ventilation, it's better to plant in shallow basin with small height and diameter. Don't buy a basin casually. It's not good for flowers.
The young plants of Gladiolus should be watered every 10 days to ensure that the pot soil is moist, so as to prevent the tip of the leaves from turning yellow. After flowering, water should be replenished in time. In summer, the weather is hot and the water evaporates quickly. It can be watered once every 4 days, and the flowering period can be prolonged by controlling the water properly after flowering.
Water quantity shall be strictly controlled during watering. Large water or accumulated water is easy to cause root rot, water shortage will cause flower stem wilt, and improper water will affect the appearance.
Gladiolus is a kind of fertilizer loving flower. It should be fertilized in time after planting. Generally, three to four times of mature liquid fertilizer is applied every month. Pay attention to the content of nitrogen fertilizer, increase the phosphorus and potassium fertilizer, so as to increase the differentiation rate of flower bud.
After flowering, superphosphate can be selected as topdressing to promote the growth of corm.
In addition, we should pay attention to three times of fertilization for newly planted seedlings: the first time 2 leaves grow, the second time 4 leaves grow, and the third time after flowering. Take out the seed ball in time after flower withering, dry and store it.
Gladiolus can bloom three months after planting, but it is greatly affected by the temperature in the growth process. The higher the temperature during the growth, the faster the growth, of course, to be controlled within a certain range. For example, when the temperature is 12 ℃, it takes 110-120 days to bloom, 15 ℃, only 90-100 days. When the temperature is 20 ℃, it takes 70-80 days. When the temperature reaches 25 ℃, it only takes 60-70 days.
Gladiolus likes sunshine, and the flower bud differentiation will be better under the light condition of more than 14 hours a day. After flower bud differentiation, reducing light time properly can promote flower bud growth and early flowering.
The most suitable temperature for Gladiolus growth should not exceed 27 ℃, especially in summer, when the temperature is too high, ventilation and cooling should be carried out in time, which inevitably leads to plant growth weakness.
Gladiolus is a bulbous plant. It is necessary to protect the bulblets well after the flowers have withered. When the leaves start to turn yellow, dig out the seed balls and store them in the air.
