2. Fertilization: Rosa roxburghii doesn't like thick fertilizer, and it is usually applied in 3-4 weeks during the growth period 1 time of the decomposed pancake. Too much fertilization, especially too much nitrogen fertilizer, makes the branches white and long, and only leaves don't bloom. In bud stage, the application of phosphorus and potassium fertilizer 1-2 times will lead to more flowers and bright colors.
3, watering: Rosa davurica is a succulent plant, drought-tolerant, and watering should not be too much. If the pot soil is too wet for a long time, it will not only cause rotten roots, but also endanger the survival of plants, so it is better to water the pot soil a little at ordinary times. In summer, water evaporates quickly, so water is more suitable, but no water can accumulate in the basin. Too much watering at flowering stage will cause falling flowers and buds, and even cause rotten roots.
4. Temperature and light: Rosa davurica likes plenty of sunshine, which should be given all year round. During flowering, when the sunshine is sufficient, the bracts are brightly colored and the flowering period is long; The sun is not enough and the color is dim. If cultivated in the shade for a long time, it will not bloom or rarely bloom. Tiger thorn Li Xi is warm and not cold-resistant. Generally, the northern area leaves the house at the beginning of May and puts it in the sunny place, and enters the house at the beginning of 10 10, and puts it in the sunny place.
5, plastic pruning: the flower of Rosa davurica is at the top of the new branch. If you want the Rosa davurica fruit to blossom more, you must prune it properly. If the main branch is too long, there will be fewer flowers, so the branches that are too long and grow irregularly should be cut short after flowering. Generally, two new branches will grow under the cut of branches, and they will bloom when they are 5-6 cm long. Prune 1 time every year, and the whole plant will be full of bright red flowers in a few years. Because the branches are slender and soft, with the growth of plants, bamboo sticks or iron wires can be tied into brackets with different shapes, and the branches can be tied to them to make styles, which can better show the beauty of red flowers and green leaves when flowers bloom. If it is not pruned in time and allowed to grow naturally, its main branches will grow longer and longer, which will not only lead to fewer flowers, but also make the plant shape unsightly.