Primula seed propagation

Sowing time

Primroses are mainly propagated by sowing, and the sowing date should be determined according to the needs of flowering. Generally, they can blossom about 6 months after sowing. Primrose seeds have a relatively short life span, so it is best to sow seeds immediately after seed collection, or store them in a low-temperature and dry place.

Sowing temperature

The most suitable temperature is 15-21 ℃, must not exceed 25 ℃, otherwise it will not sprout.

Sowing pot soil

When sowing, it is best to use a shallow basin, choose loose, well-drained fine soil, you can use fine rotten leaf soil and garden soil mixed as basin soil.

Sowing method

Flatten the basin soil, then mix the seeds with 4 times fine sand and sow them evenly in the basin. Because the seeds are relatively small, the soil surface should be gently compacted with smooth planks. There is no need to cover the soil, which is beneficial to the water absorption and rooting of the seeds.

Sowing management

Watering after sowing, take the basin immersion method, put the whole basin into the pool, let the water slowly seep upward from the small hole in the basin bottom to the basin surface, until the topsoil is soaked and taken out. Then cover the glass to help moisturize, put it in the semi-shade, about 1-2 weeks, you can sprout, remember to remove the glass, and then move it to a place with light.

After understanding the sowing and breeding methods of primroses, let's take a look at the growth habits of primroses.

Sowing time of primrose

Primrose must be no stranger to many people, it has a variety of forms, very ornamental, so it is deeply loved by people in the market. Now many people like to plant it, but before planting, we need to have an in-depth understanding of its sowing skills.

Sowing time of primrose

In fact, primrose seeds are generally best sown in May, June and September every year, which is similar to the suitable temperature for its germination, providing it with a condition for natural growth and germination.

Sowing and breeding method of primrose

1. Sowing time. Primroses are mainly propagated by sowing, and the sowing date should be determined according to the needs of flowering. Generally, they can blossom about 6 months after sowing. Primrose seeds have a relatively short life span, so it is best to sow seeds immediately after seed collection, or store them in a low-temperature and dry place.

2. Sowing temperature. The most suitable temperature is 15-21 ℃, must not exceed 25 ℃, otherwise it will not sprout. When sowing pot soil, it is best to use shallow basin, choose loose, well-drained fine soil, can use fine rotten leaf soil and garden soil as basin soil. The sowing method will flatten the basin soil, then mix the seeds with 4 times fine sand and sow them evenly in the basin. Because the seeds are relatively small, the soil surface should be gently compacted with a smooth plank, and there is no need to cover the soil. It is beneficial for the seeds to absorb water and take root.

3. Sowing management. Watering after sowing, take the basin soaking method, put the whole basin into the pool and let the water slowly seep upward from the small holes in the basin to the basin surface until the topsoil is soaked and taken out. Then cover the glass to help moisturize, put it in the semi-shade, about 1-2 weeks, you can sprout, remember to remove the glass, and then move it to a place with light.

What if the primrose has withered?

1. Lack of water leads to withering. Lack of water is a common phenomenon in primrose culture. Performance in the primrose leaves yellow, dull, drooping leaves, withered. There are two reasons for water shortage and withering: first, due to the high temperature and heat in summer, the air is too dry and the water evaporates greatly, resulting in dehydration and wilting due to its inability to supply water normally. Second, due to the lack of water in the basin soil, the amount of water watered each time is too little, which only moistens the surface of the basin soil, but fails to water thoroughly and cannot go deep into the basin bottom, so the lower roots cannot absorb water. Over time, flowers wither because they do not get water.

Treatment: the above two situations should be replenished in time, pay more attention to observation in summer, watering should be sufficient, but do not accumulate water, make the soil moist, and keep the surrounding air humidity low, which is the healthy growth of the plant.

2. Disease leads to blight. Due to the large alternation of winter and spring seasons, primroses are attacked by diseases, specifically, the leaves lose their original luster and vitality, become very soft, and then the lower leaves gradually wither, and finally spread the whole plant.

The treatment method uses Tuccinol for sterilization and disinfection. if it is found in time and gets up early in the infection, it can be recovered in one day through the treatment of Tumenol. If the infection time is too long and the petiole has begun to rot, the recovery period can be up to two weeks. Fertilization of primroses leads to withered primroses. As a result, primroses are oversupplied with fertilizer and eager for success, which makes the edges of primroses yellow and the leaves wither, which will lead to the death of leaves for a long time.

In case of excessive fertilization, pour more water and wash away too much fertilizer in the soil, or turn the basin and change the soil immediately, so that the plant can gradually return to its normal growth state.

Disease control of primrose

1. Primula mosaic disease.

Symptoms: the mosaic disease of primrose is a whole-plant disease caused by mosaic virus, which can cause the leaves of the plant to become deformed or smaller, characterized by dark green markings throughout the plant. If plagued by such diseases, infected plants will not blossom, flowers are small deformities, mainly by aphids to spread the virus, the disease mainly infects the infected plants of the surrounding weeds.

Prevention and control methods: first, remove weeds and diseased weeds, destroy them centrally, reduce the source of infection, and then eliminate aphids in time to prevent the spread of the virus.

2. Brown spot of primrose.

Symptoms: primrose brown spot disease often occurs in the four seasons spring, caused by bacteria. Brown spots appear on the leaves of infected plants. Through the spread of wind and rain, the virus of susceptible plants will be spread to other plants.

Prevention and control methods: 70% chlorothalonil was sprayed at the initial stage of the disease.

The sowing method of primrose is relatively simple, and it is generally the best time to sow from summer to early autumn. Primroses may appear wilt and pest disease during breeding, so the management work in the later stage also needs to be strengthened in order to ensure its growth.

Main points of sowing and propagation of primroses

Primroses, also known as primroses, primroses, etc., native to China, primroses have developed rapidly in recent years, and have become a very important garden flower variety. Primroses are generally propagated by sowing, so what problems should be paid attention to in the process of sowing?

Primroses

Primroses are mainly propagated by sowing, and the sowing time can be determined according to the needs of flowering, which can blossom about 6 months after sowing. Primrose seeds have a short life span, so it is suitable to sow seeds immediately after seed collection, or to store them in dry and low temperature conditions. Sowing is often used in a shallow basin, and the basin soil is cultivated with a mixture of fine rotten leaf soil and garden soil. after the basin soil is leveled, the seeds are mixed with 4 times fine sand and scattered evenly in the basin, and then the soil surface is gently compacted with a smooth wooden board to facilitate the seed to absorb water and take root. There is no need to cover the soil. Soak the water in the basin after sowing, take it out after the topsoil is soaked, place it in a semi-shaded place, germinate for 1-2 weeks and move to a place with light. Cover the basin with glass to keep it moist. The suitable temperature for sowing was 15-21 ℃, and the germination was poor when it was more than 25 ℃.