Growth habit of Rosa multiflora
Rosa davurica is distributed in all provinces south of the Yangtze River in China, and in Guangdong, Hongkong, Hainan, Guangxi, Fujian, Hunan, Jiangxi, Zhejiang and Taiwan Province provinces. Often wild in hilly slopes, scrub, forest margins, valleys, Shan Ye, roadsides and other places. Strong adaptability, shade tolerance, fast growth, strong germination, extremely resistant to pruning, and can grow in barren sunny or semi-humid environment.
Breeding method of wild rose
1. Cutting: In spring, select annual, full and strong shoots, the cutting length is 8 ~ 12 cm, and the lower end is cut at a 45-degree angle. Before cutting, soak the bottom of cuttings in low concentration potassium permanganate solution for 1 ~ 2 hours, and cut in a bed with good water permeability and permeability, river sand or perlite, with a depth of 1 ~ 2 hours.
2. Sowing: In the season from long summer to full season, the newly collected seeds are dried and placed in a cool and ventilated place to sow. In order to improve the germination rate and early emergence, the seeds can be soaked in potassium permanganate solution with the concentration of 1 ~ 2% at about 30℃ for 1 ~ 2 hours, taken out and dried, planted, covered with soil about 1 cm, and kept moist, shaded and ventilated.
Cultivation method of wild rose
1. Soil: Rosa davurica requires fertile, loose, slightly acidic and well-drained loam or sandy loam with good drainage and rich humus to be the most suitable for potted plants.
2. Watering: Rosa multiflora is slightly drought-tolerant, and water should be controlled during the growing period. Spray water on the leaves to cool down in summer. When drying, spray water on the blades and surrounding space in time to keep the air humidity.
3. Sunshine: Rosa multiflora is a positive plant. Whether it is planted in the ground or potted, it needs to be placed in full sunshine or semi-sunshine.
4. Temperature: When the temperature of Rosa davurica is lower than 0℃ in winter, the plants are easy to shed leaves. If the temperature is low for a long time, it is easy to cause the above-ground part to dry up and die.
5. Fertilization: Pay more attention to the application of phosphorus and potassium fertilizer in seedling stage, apply thin fertilizer frequently in bud stage, or topdressing on leaves. Phosphate fertilizer can be applied twice in flowering period.
6. Pruning: Wild roses need to be pitted repeatedly. In the process of growth, too long branches can be thinned, and can also be drawn and shaped according to the needs of modeling. At the same time, it can cut off dead branches, old branches, over-dense branches, over-flourishing branches and pests and diseases in time, and improve ventilation and light transmission conditions. After flowering, the residual branches should be cut off in time to reduce nutrient consumption and promote its flowering again.