Rose (scientific name: Rosa sp.): it is a general term for some plants of the genus Rosa, mainly referring to varieties and horticultural varieties of the vine rose. Most of them are small flowers of a kind of rattan climbing fences. They are deciduous shrubs native to China and have strong variability. The stem spines are large and generally have hooks, and each node has about 3 or 4; Leaves alternate, odd pinnate compound leaves, 5-9 leaflets, toothed leaf margin, flat but pilose leaves. The flowers are usually 6-7-flowered. They are panicle corymbose inflorescences, which are born on the top of branches. The flower diameter is about 3 cm, and only opens once a year. The disk of rose flower encircles the mouth of calyx tube, with white, yellow and other colors. Sepals will fall off after flower withering; The fruit is a round sphere.

Growth habit:

Rosa likes sunshine, is also resistant to half shade, and is relatively cold resistant. It can overwinter in the open air in most parts of northern China. The soil requirements are not strict, and it is resistant to drought and barren. However, it grows better when planted in the soil with deep, loose, fertile and wet soil and smooth drainage. It can also grow normally on the sticky soil. Do not bear water and moisture, and avoid ponding. It has strong sprouting ability, is resistant to trimming and pollution. The flowering period is generally from April to September every year, and it can be opened in sequence for as long as half a year. Due to the global warming caused by the greenhouse effect, the roses in some places begin to bloom in April or even March.

Curing method:

Roses like fertilizer. According to the principle of "thin fertilizer and frequent application", they constantly supply various nutrients. The longer the plants grow, the more flowers they bloom, and the more nutrients they need. It is necessary to cultivate soil and fertilize once a year in winter to keep the shoots and flower buds flourishing and beautiful. Due to the large output of cut flowers, fertilization is required 1-2 times a week in the flowering season, and attention should be paid to cultivating the mother branches of flowers and cutting the flower buds on the weak branches.