When will the late fragrant jade flower bloom? when will the late fragrant jade flower seed bulb be planted?

Evening fragrant jade is a kind of flower variety introduced and cultivated from abroad in our country. at present, it is still widely distributed in our country, mainly in the south. Evening fragrant jade attracts a lot of people because of its high ornamental value, but when planting, everyone must be most concerned about its planting time and flowering time.

When does the evening fragrant jade flower bloom?

Evening fragrant jade is a perennial herb of Amaryllidaceae. The spike-shaped bouquet is terminal, with 12-32 flowers per panicle, white with strong fragrance, and more fragrant at night, hence the name. The flowering period of open field cultivation is usually from July to early November, while the full flowering period is from August to September, which is a summer cut flower species.

When will the late fragrant jade seed bulb be planted?

The bulbs are usually planted from April to May. Before planting the bulbs, the bulbs are placed in the environment of 25 ℃-30 ℃ and wet for about 15 days. If the big ball and the small ball are planted separately, the planting depth should be shallower, because the shallow planting is beneficial to flowering, it is generally appropriate to plant the big ball with the bud top slightly exposed to the ground, and when planting the small ball, the bud top should be lower than or flush with the soil. Generally speaking, it takes more than a month for seedling emergence, and it grows faster after emergence.

The cause and control of late fragrant jade with only long leaves and no flowering

First, the reasons:

The main results are as follows: 1. the plant has not reached the flowering age. The flower buds of late fragrant jade had already formed on the bulbs a year before planting, and only long leaves did not blossom, probably because the plants planted were too small to reach the age of flowering, so they did not bloom.

2. Improper storage of bulbs in winter. Improper storage of tubers in winter, putting the bulbs in a dry cellar after drying, and burying them with straw and soil will also lead to less flowering.

3. Excessive fertilization. The excessive application of nitrogen fertilizer after planting will lead to the growth of the stems and leaves of late fragrant jade, which will cause the late fragrant jade to bloom less and even not blossom in serious cases.

Second, prevention and control methods:

1. Select excellent varieties. When choosing evening fragrant jade, we should choose larger tubers and healthier ones to plant.

2. Reasonable storage in winter. To store the tuber in winter, keep the room temperature at 25 ℃-26 ℃, gradually reduce the moisture in the sphere to the dry wrinkle of the outer skin, and lower the temperature by 15 ℃-20 ℃ until coming out of the house in the next spring. If you store the tuber in winter, you can also choose to hang the tuber indoors and put it under the stove to dry it, which can make the tuber dry, thus forcing the tuber of late fragrant jade to enter the dormancy period. it is beneficial to the growth and flower bud differentiation after planting in the spring of the following year.

3. Rational fertilization. Apply less fertilizer at the initial stage of planting, and before the flower stem is about to come out or blossom, fertilize and topdressing. It is generally applied once a month after planting, once before flowering, and once every one and a half or two months thereafter.

Common diseases and insect pests of late fragrant jade and their control methods

The main results are as follows: 1. The root nodule nematode larvae invade the roots, often making the plants stunted, dwarfed and yellowed.

Control method: when it occurs, 1500 times of omethoate emulsion can be used to irrigate the soil, and 3% carbofuran can be buried in the basin soil for prevention and control.

2. Powdery mildew is mainly harmful to leaves.

Prevention and treatment: 1000 times of Yifaling wettable solvent can be sprayed when it occurs. Other control methods refer to Dahlia. The relevant part of melon leaf chrysanthemum.

3. Anthrax.

Control methods: spray control with 1000 times of methyl topiramate wettable powder, 1000 times of anthrax Fumei wettable powder and 700x of chlorothalonil wettable powder. Usually, you can choose 1 ∶ 1 ∶ 200 fold Bordeaux solution for prevention and control.

4. The main insect pests are thrips and mole crickets in North China.

Control methods: thrips can be controlled with 3000 times of permethrin EC and 3000 times of 18% Alftin EC; mole crickets of North China can be sprayed with 45kg per hectare as poisonous soil, covered with soil and watered, or irrigated with 1000 times of phoxim EC and 1000 times of 48% Lesbon EC.

The flowering time of late fragrant jade is generally from summer to spring, or a relatively long viewing period. Spring is usually chosen when planting. After planting, if you reach the age of flowering but do not blossom, you should see if it is caused by fertilization, storage and so on, and then solve the problem from the root.