What to Do When Primroses Wilt? Causes, Solutions and Growing Methods
Primroses have bright colors and are deeply loved by people. Growing this flower has high requirements for timing and soil. Its flowering period is relatively short, and people often choose to plant it from June to September, when temperatures are lower, so this time is more suitable than any other. Friends who like them should hurry and plant a few pots of beautiful primroses to give to good friends.
What to Do When Primroses Wilt (Causes and Solutions)
1. Primroses lack water
Lack of water causing wilting is a common phenomenon when growing primroses. It shows up as primrose leaves turning yellow, losing their luster, drooping, and wilting. There are two reasons for water-deficiency wilting: first, in summer, because of high temperatures and intense heat, the air is too dry and water evaporates greatly, so the plant cannot be supplied with water normally and becomes dehydrated and wilted. Second, because the potting soil lacks water, and each watering is too little, only the surface of the potting soil is moistened but the water does not soak through and cannot reach the bottom of the pot, so the lower roots cannot absorb water, and over time the flowers become wilted from lack of water. Treatment: when the above two situations occur, water should be replenished in time. In summer, pay more attention to observation, water thoroughly, but do not let water accumulate, keep the soil moist, and keep the surrounding air humidity low, so the plant can grow healthily.
2. Primrose diseases
Wilting caused by the large alternation between winter and spring makes primroses vulnerable to disease. The specific signs are that the leaves lose their original luster and vitality and become very soft, then the lower leaves gradually wilt, and finally it spreads through the whole plant. Treatment: use Tujunnuo for sterilization and disinfection. If discovered in time, in the early stage of infection, it can recover after one day of treatment with Tujunnuo. If the infection has lasted too long and the leaf stalks have already begun to rot, the recovery period can be as long as two weeks.
3. Fertilizing primroses
Wilting caused by flower lovers eagerly wanting primroses to bloom and thus supplying too much fertilizer, rushing for results, makes the leaf edges of primroses turn yellow and the leaves wilt, and over a long time it leads to leaf death. Treatment: if too much fertilizer has been applied, water with more clean water to wash away the excess fertilizer in the soil, or immediately repot and change the soil, so the plant gradually returns to normal growth.
How to Grow Primroses
1. Growing time for primroses
Primroses are mostly grown by sowing, and are suitable for sowing from June to September. Planting can be done at the end of June each year. Summer temperatures are high, and the survival rate of transplanted seedlings is relatively low, so a certain amount of care is needed, placing them in a cool place for management. In August to September, the temperature is not so high, and growing them at this time is more convenient, but the development period of primroses is short, the plants grow relatively short, and the flowering period is short. If they are not grown reasonably at this time, the ornamental value of the primroses will be reduced.
Therefore, sowing directly when the seeds are mature is the most suitable. Growing techniques for primroses: when growing primroses in pots, the seeds should be evenly scattered with fine sand, then the surface pressed firm with smooth glass or a board, which helps the seeds absorb nutrients and take root. The seeds are rather small, so do not cover them with soil after sowing. Use the soaking method for irrigation, immersing half the pot soil in water, and wait until the soil in the pot is moist. Place it in a cool place and cover with glass. They can sprout within two weeks. Remove the glass and gradually increase their photosynthesis.
2. Choosing soil for primroses
The potting soil for primroses should be a mixed loam of leaf mold and garden soil with a small amount of base fertilizer added. The soil should be loose, fertile, well ventilated and drained, slightly acidic soil, which is good for root development. Transplanting primroses into pots: transplant when 2-3 true leaves have grown. A pot diameter of 7 cm is most suitable. After the seedlings recover, apply decomposed liquid fertilizer once a week. After a month and a half, change the pot to a 13-15 cm pot.
During the flowering period of primroses, apply dilute liquid fertilizer once a week and keep the soil moist, not too dry. In winter, if the soil is too wet, evaporation and absorption decrease, which causes root rot in the plant, so watering should be reduced. Getting primroses through the summer is relatively difficult. If you want them to continue blooming the next year, they should be brought safely through the summer. Repot the plants after the flowers fade, place them in a cool, ventilated place, protect them from sun and wind, and reduce watering. In hot weather, water should be sprinkled on the ground to maintain a certain humidity, and wait until the next year to care for them and let them bloom.
Primrose Disease Control
1. Mosaic disease symptoms
Mosaic disease in primroses is a whole-plant disease caused by mosaic virus. It causes the plant's leaves to become deformed or smaller, and is characterized by dark green markings distributed throughout the plant. If troubled by this kind of disease, infected plants will not bloom, and the flowers are small and deformed. The virus is mainly transmitted by aphids, and the disease mainly infects nearby diseased weed plants. Control method: first remove weeds and diseased plants and destroy them centrally to reduce sources of infection; second, eliminate aphids in time to prevent the spread of the virus.
2. Brown spot symptoms
Brown spot in primroses mostly occurs on the fairy primrose and is caused by bacteria. Brown spots appear on the leaves of infected plants. Through wind and rain, the virus of infected plants is spread to other plants. Control method: in the early stage of the disease, spray 70% chlorothalonil to kill and control it.
3. Gray mold symptoms
Gray mold is the most common disease of primroses, occurring all over the country. When a plant is infected by the disease, the whole plant turns yellow and withered and drops its leaves. The disease mainly infects parts such as leaves and tender stems. It mostly occurs at leaf tips and leaf edges. In the early stage of the disease, water-soaked spots appear, then gradually enlarge to form brown patches and gradually rot.
In the later stage, a gray-yellow layer forms, gradually rotting and falling off. If the climate is relatively humid, the disease is characterized by a gray mold layer. It mostly occurs when the temperature is 20°C, and is most likely to occur when air humidity is high. Control method: plant reasonably, and planting density should not be too close. Pay attention to keeping the environment ventilated and reducing humidity in the air. Cut off diseased leaves and residual branches in time to reduce sources of infection, so the incidence rate will decrease. During the disease period, spray 50% procymidone for control.
Primrose Pest Control
1. Long-tailed mealybug
Long-tailed mealybugs harm many flowers, including primroses. Adults and nymphs pierce and suck the sap of primrose stems and leaves, greatly affecting the overall development of primroses. Control method: if the infestation of long-tailed mealybugs is relatively small, we can scrape them off manually, or use baijiu to disinfect and brush them off. During the peak hatching period of nymphs, spray 1000 times diluted fenitrothion to kill large numbers of long-tailed mealybugs.
2. Red spider mite
Red spider mite is also called cotton red mite, scientific name spider mite. The adult red spider mite varies greatly in body color, generally mostly red, with black spots on both sides of the back; the young mite is nearly round, with black patches on both sides of the body, and the nymph has four pairs of legs. Red spider mites like to live in high-temperature, dry environments. Summer heat makes them reproduce rapidly. Red spider mites mostly harm the backs of leaves, causing serious damage.
There are obvious patch-like pigments on the sides of their bodies. During reproduction, red spider mites harm the stems and leaves of plants and reproduce through the stems and leaves. How to control them: before they overwinter and hatch, scrape off the bark and destroy it centrally. Applying lime water to the tree trunk can kill large numbers of eggs. In addition, in early spring, the soil can be turned and weeds in the field removed so that red spider mites cannot find food, causing them to gradually die.
Beautiful primroses look very good after blooming, and their colors are also very bright, but once pests or diseases appear, they will affect their flowering effect. Therefore, the above control methods for pests and diseases are very effective. When the above situations occur, if we treat the symptoms with the right remedy, we can surely help our primroses quickly recover their health.