Primroses like a mild astigmatism environment. Enough sunlight can help them grow, but strong sunlight is hard to accept. In the seedling stage, it can be exposed to astigmatism. Since September, the outside sunlight is not too strong. It can be exposed to more sunlight. From October, it can receive full sunlight, which can promote growth and also help flower bud differentiation.
For the primrose planted in the field, it can be planted in the soil with good drainage and rich humus, which can provide a good growth foundation. If it is maintained in a pot, it can be cultivated in neutral soil, and the pot can be changed regularly.
The most suitable temperature for growth is between 13-18 ℃, which is favorable for growth. The lowest temperature in winter should not be below 0 ℃.
When watering during the growth period, it is necessary to see whether the water is wet or dry, and then supply water after the surface is dry. The one-time water supply needs to be thorough, so as not to make the upper and lower water volume different.
It is also very important to add fertilizer. Liquid fertilizer is applied every 15 days during the growth period. Also pay attention to the application of base fertilizer, and supplement the base fertilizer when changing pots.
