When do roses usually bloom?

The flowering period of roses is May-June. The climate between the north and the south is different, and there will be subtle differences. The flower bud and germination of roses need an average temperature above 7 degrees, and the effective accumulated temperature from the initial stage of germination to the flowering stage needs 365 degrees, which generally depends on the temperature.

Dry hot wind and soil drought are the most taboo in the rose period. For fields with water conservancy conditions, irrigation can be carried out in the bud period. Roses stop growing twice in the process of production and development (generally called summer sleep in June-July; 1 1-65438+ February is called hibernation), at this time, the branches do not grow and the branches do not elongate. The dormancy period in summer is the best pruning period for flower picking seedlings. When hibernating, base fertilizer and overwintering water can be applied to lay the foundation for stable and high yield of flower buds in the coming year.

Cultivation methods and matters needing attention of roses

Soil: Roses are suitable for growing in fertile sandy loam, especially alkaline soil.

Light and temperature: roses like warm and sunny environment, but they are also cold-resistant, cold-resistant and drought-resistant, and grow best at 15~25 degrees.

Water: roses should avoid water accumulation. Usually a small amount of water can be used, and the amount of water should be increased before and after flowering, and it should be poured thoroughly at one time.

Fertilization: Rose likes to fertilize. Before germination in spring, you can apply decomposed bean cake fertilizer, and then apply decomposed organic liquid fertilizer after bud formation.

Pruning: Plants can be pruned when they are dormant in winter. When pruning, the dead branches, weak branches and over-dense branches are pruned, leaving about 1/2 strong branches.

Rose (scientific name: Rosa? Rugosa) is a rose plant in Rosaceae, which is the general name of a series of cultivated large-flowered rose varieties in daily life. Roses originated in China. In ancient Chinese, the word "rose" originally meant red jade. Roses have always been a symbol of beauty and love.

Rose is a deciduous shrub with coniferous branches, odd pinnate compound leaves, 5-9 leaflets, ellipses and prickles. Petals obovate, double to semi-double, purplish red and white. The fruit period is from August to September, and it is oblate. Branches are weak, drooping and prickly, and only bloom once a year, so they are rarely used for breeding. Recently, their main characteristics are disease resistance and cold tolerance.