Rose (Rosa spp.) Cultivation Methods and Precautions Explained in Detail

The rose has beautiful blooms. With their brilliant colors and high ornamental value, roses are also used as garden flowers, planted in flowerbeds along roadsides, where they can be considered outstanding compared with the other flowers there. So how exactly are these beautiful flowers grown, and what precautions should be taken during cultivation?

How to Grow Roses

Rose seeds can be used for raising seedlings, but in production, softwood cuttings taken from the current year's young shoots are mostly used for propagation, as they root easily. Precious varieties are harder to root from cuttings, so layering or grafting can be used for propagation. Seedlings from asexual propagation can bloom in the same year. For seedlings used as potted flowers, older branches from superior varieties should be selected and propagated by layering, and attention should also be paid to pruning the main bud and carrying out artificial dwarfing. For seedlings used as cut flowers, varieties that can form flower-bearing mother branches and produce large, brightly colored blooms should be selected for propagation.

Rose Cultivation Methods

1. Propagation: Division, cuttings, and layering are commonly used, and can all be carried out in spring, early summer, and early autumn. Sowing is also possible, either in autumn or in spring after sand storage; germination occurs 1-2 months after sowing.

2. Cultivation: For ground planting, trenches should be opened and base fertilizer applied before planting. Water frequently in spring. New long branches grow from the roots each year, and flowers form on their lateral branches in the same year. After flowering, the branches that have bloomed should be pruned off. The multiflora rose is very tolerant of cold and fertilizer; during growth, attention should be paid to drainage and waterlogging prevention in the rainy season, and fertilizer should be applied 2-3 times to encourage flower branches that did not bloom to flower the following year.

3. Watering: Roses like moisture but fear dampness and are averse to waterlogging. From budding to before flowering, water a little more generously, to the extent that the soil is moist but not waterlogged. After flowering, do not water too much; the soil should be kept alternating between dry and moist, and attention should be paid to drainage and waterlogging prevention in the rainy season.

4. Topdressing: Roses like fertilizer and also tolerate poor soil. In March, apply 1 to 2 times a nitrogen-based liquid fertilizer to promote the growth of branches and leaves. In April and May, apply 2 to 3 times a phosphorus- and potassium-based fertilizer to encourage more buds and more flowers. After flowering, apply one more rejuvenation fertilizer, after which no further fertilizing is needed. Roses are sun-loving flowers; they like warmth and also tolerate cold, and in North China and areas to the south, they can overwinter safely outdoors.

5. Post-bud management: Roses have strong sprouting ability and grow luxuriantly. If not pruned in time, under conditions of muggy heat, high humidity, insufficient light, and poor ventilation, pests and diseases are likely to occur, so pruning should be carried out once after flowering.

Precautions for Rose Cultivation

1. Roses have very strong sprouting ability, so they must be pruned in time, and also pruned in time after flowering, to ensure light and ventilation for the branches.

2. Rose cultivation and management can be extensive; the requirements for soil, fertilizer, and water are not high. It is best to grow them in a loose, slightly acidic soil rich in organic matter.

3. After winter begins, cut off pest-damaged and dead branches, and retain a certain number of thick, strong branches to help increase flower quantity.

4. To reduce pests and diseases, it is best to do good prevention and control work during the growing season between spring and summer.

How to Prune Roses

Summer pruning of roses mainly involves cutting off the suckering shoots and flowers from grafted rootstock, and after flowering, cutting off spent flowers along with leaves and thinning out excess buds, reducing nutrient consumption to create good conditions for the next flowering period. To make the plant shape attractive, long branches can be cut back by 1/3 or half, and medium branches by 1/3, cutting at a slant 1 cm above a leaf. If pruning is too light, the rose plant will grow taller and taller, the branches longer and thinner, and the flowers smaller and smaller.

Winter pruning depends on the variety and cultivation purpose. When pruning, branches should be retained, and attention should be paid to the overall shape of the rose plant. Large-flowered varieties should retain 4-6 branches, 30-45 cm long, choose a strong side bud, and cut off the branch above it. For trailing or climbing varieties, the main focus is thinning out old wood, cutting off weak and diseased branches, and cultivating the main trunk.

If you want roses to grow well, besides care, pruning is also an important key factor, because pruning can inhibit fast-growing branches from absorbing the plant's own nutrients, and can also cut off diseased branches to avoid causing overall harm. But everyone should be reminded that the pruning methods in summer and winter are different, and we can follow the methods above.