2. Moisture. Rosa davurica likes moistening dryness, but is afraid of dampness. From germination to flowering, a little more water can be properly poured to ensure that the soil surface is moist but not waterlogged. Don't water too much after flowering. When the soil is wet and dry, it can get wet in rainy days, but it should be drained in time. Pay attention to the way of watering. Don't water the flowers at the beginning, especially when the sun is strong, don't let the leaves and flower hearts accumulate water, so as not to burn the flowers and leaves.
3. Nutrients. Wild rose likes fat and bears barren, and can grow regardless of satiety. The usual fertilization method is: apply fertilizer 1~2 times in March, mainly with nitrogen-containing liquid fertilizer to promote the growth of branches and leaves. Fertilize 2~3 times in April ~ May, mainly with phosphorus and potassium fertilizer to promote the flowering of pregnant buds; Apply compound fertilizer once after flowering to promote plant recovery. Try not to apply fertilizer at other times, so as not to affect the flowering of plants due to excessive fertilization.
4. Pest control. Wild rose is delicate and charming, but it is also weak, and it often infects many diseases. Most of them are fungal diseases. It is effective to spray Bordeaux solution or thiophanate-methyl solution in time and use drug prosthesis at home. Usually pay attention to enhance the disease resistance of Rosa davurica, and increase phosphorus and potassium fertilizer when fertilizing.