Written by Maggie
Jan 23 2021
When we grow and care for German primrose, potting soil mainly leaf soil, peat soil and manure soil, river sand mixed soil is given priority to, and place it in a little shade during the growth environment, controlling temperature in 13 ~ 18 ℃ or so. We must carry on the spray cooling in summer. When we grow and care for German primrose, it can be watered once every 2 ~ 3 days, to avoid the soil waterlogging.
German Primrose likes to grow in sandy soil with good drainage and rich organic matter. When potting at home, it can be mixed with 3 parts of leaf rot soil, 1 part of peat soil and 1 part of barney-manure soil, plus 1 part of river sand to form culture soil. When we grow and care for German primrose, it should be repotted every 1 to 2 years, and the soil should be remixed when repotting.
German Primrose likes to grow in a semi-shade environment. When we grow and care for German primrose, it should be maintained in a slightly shaded place with good ventilation. In the case of high temperature in summer, it should be moved to a cool place and sprayed with water mist once or twice a day to reduce the surrounding temperature.
German Primrose likes to grow in moist sand soil. When we grow and care for German primrose, watering can be done every 2 to 3 days, and watering can be done once or twice a day in hot climates. When entering autumn, watering times should be gradually reduced, and it is best to water lightly every 4 to 5 days.
Fertilization management is very important when we grow and care for German primrose. In the growing season, organic fertilizer solution or compound fertilizer should be applied once a week, and heavy fertilizer should be avoided by all means. After fertilization, water should be poured to dilute the concentration.
In spring, the flowers of German primrose have withered, so it is necessary to timely cut the remaining flowers and stud, and apply topdressing once or twice with thin fertilizer to supplement the plant nutrients. When we grow and care for German primrose in spring, the compound fertilizer can be the main fertilizer, which can promote the growth of flowers and branches. In spring, it is best to replace the pot soil once to maintain a good ventilation environment.
Summer is particularly important in the seasonal management of German Primrose. German Primrose hates high temperature and is afraid of direct light. When we grow and care for German primrose in summer, it is better to put it in a well-ventilated environment with a small amount of astigmatism irradiation, and the daily illumination time can be about 4 hours.
Autumn is a season when the growth of German Primrose is relatively vigorous, and the light is relatively soft at this time. It can be placed outdoors to receive full sunlight to promote the growth and differentiation of plants, and can also reasonably carry out photosynthetic reactions to promote the formation of Flower buds. When we grow and care for German primrose, it can also be applied with phosphorus fertilizer once.
The flowering period of German Primrose is in winter. At this time, the temperature should be strictly controlled, and the temperature can be kept at about 15℃ ~ 20℃. The appropriate temperature will promote the formation of flower buds.
Among the diseases and insect pests of early German Primrose and its control, gray mold is a common disease, which mainly appears in winter and early spring. High and low temperature will increase the probability of this disease. When we grow and care for German primrose, once this disease is found, it needs to be sprayed with 1000 times of Scrippospora, which can be effectively controlled.
When we grow and care for German Primrose, stem rot often appeared, mainly on the petiole, which caused great damage to the plant. Once found, a 1000 times solution of 50% mancozeb could be used to prevent the further spread of germs.
Leaf miners can enter the mesophyll and eat the leaves for living, which not only harms the health of the plant, but also reduces the ornamental value of the plant. When we grow and care for German primrose, the best preventive measures are to spray 1000 times the potential gram on the diseased leaves, strengthen the ventilation environment, and carry out reasonable fertilization to increase the resistance of the plant.
Aphids are also one of the most common insect pests in life. During the peak period of this insect pest, it is necessary to reduce the temperature and maintain a moist growth environment to prevent the occurrence of this disease. When we grow and care for German primrose, if suffering from this disease, dichos can be sprayed every other week, which can effectively treat this insect pest.