Well-raised roses will also bloom in autumn.
Rose is also known as thorn rose, wandering flower, assassin, and heart-piercing rose. A shrub of the genus Rosa in the family Rosaceae. As a crop, its flowers are mainly used to extract essential rose oil, which is an important product in Bulgaria. Rose oil is more valuable than gold of equal weight and is used in cosmetics, food, fine chemicals and other industries.
The three heroes of the Rosaceae family - roses, roses and roses are actually plants of the genus Rosa. In Chinese, people are accustomed to calling varieties with large diameter and solitary flowers as roses, those with small clusters of flowers as roses, and those that can extract essence as roses. But in English they are both called rose. According to the currently officially registered varieties of Rose, there are about 30,000.
Rose has many thorns on its branches, so it is called "thorn rose". The poet Bai Juyi once said, "The calyx is connected to the mud, and the branches are surrounded by rose thorns." Roses can extract high-grade spice rose oil. Rose oil is more expensive than gold, so roses are called "golden flowers". It blooms from April to May in summer. The flowers are solitary or clustered on the top of the branches. They are red, purple, white, green, etc., and can be divided into single and double petals. The fruit period is from August to September, oblate spherical shape. It is native to China and has been cultivated for a long time for ornamental purposes.
Cultivation management
Level the land and choose a plot with deep soil, loose structure and good drainage to establish a rose garden. Dig pits with a distance of 50 cm between plants and 150-200 cm between rows. The pits should be deep. 50 cm, apply 10 kg of farmyard manure or bio-organic fertilizer per pit.
To choose a good seedling, choose a strong rose seedling. The sprouted seedling should have 2-3 branches; the grafted seedling requires a well-developed root system, a stem diameter of 3-4 mm, and a plant height of 30 cm. Plant as soon as possible, and the seedlings shipped to other places must be dipped in pulp and packaged.
Reasonable dense planting requires about 700 rose seedlings per acre. Since there are few seedlings that year, in order to save land, 1,500-2,000 rose seedlings can be planted per acre. In the second year, the seedlings can be transplanted or sold. Spring planting is carried out in early spring before the roses sprout; autumn planting is carried out from October to December, and summer planting is carried out on continuous rainy days in the rainy season.
Scientific management of cultivating and weeding. Since the seedlings are small, weeds can easily grow. Weeding must be done promptly so that the seedlings are not damaged and there is no weed. Keep the soil loose. Fertilization is mainly organic fertilizer, and top dressing is generally done four times a year. The first time around the Qingming Festival is to add livestock manure, which is called germination fertilizer, and water it in time. The second time in late April is to apply human and livestock manure before budding or flower picking. Water to promote more and full flower buds; apply bio-organic fertilizer in May, and overwintering fertilizer in late autumn and early winter to ensure that the seedlings survive the winter safely. Prune off old branches, diseased branches, and weak branches after flowering in June and during the winter dormancy period to allow new branches to grow. Attention should be paid to the prevention and control of pests and diseases at all stages of field management.
Pests and diseases control (1) Aphids and armyworms: If they harm the tender parts of plants and leaves, you can use 40% omethoate 2000 times liquid spray or methamidophos mixed with water. (2) Scarabs and cutworms: They harm the roots of plants and can be trapped with poisonous baits. (3) Rust: on the back of leaves and leaf stems. [Edit this paragraph] Key points of cultivation 1. Planting is mainly ground planting, with a small amount of potted plants. In the Yellow River Basin and areas south of it, it can be planted on the ground and overwinter in the open field. In cold northern areas, they should be potted and overwintered indoors, or trenches should be dug and buried in pots to overwinter. It can be planted after the leaves fall in autumn and before budding in spring. It should be planted in a higher, sunny place without water accumulation. The appropriate depth should be 15 centimeters from the root to the ground. When potting, use a culture soil mixed with leaf mold soil, garden soil, and river sand, and add an appropriate amount of decomposed manure, cake fertilizer, and compound fertilizer. After planting, water the seedlings once thoroughly, place them in a shaded place to slow down the seedlings for a few days, and then move them to the sun for cultivation.
2. Light and Temperature Sufficient sunlight promotes good growth. Whether ground plants or potted plants, they should be placed in a sunny place and receive more than 4 hours of direct sunlight every day. It cannot be placed indoors in a place with insufficient light for a long time. Enter the house in winter and place it in a sunny place. The suitable growth temperature is 12-28℃, and it can withstand low temperatures of -20℃. It is safe to overwinter in the open field in Zhengzhou area.
3. Watering and Fertilizing: Apply an appropriate amount of organic fertilizer into the tree cavity before planting, and water thoroughly after planting. Ground-grown roses do not have strict requirements for water and fertilizer. Generally, three times of fertilizer is sufficient. The first is pre-flowering fertilizer, which should be applied in the ditch before the spring buds emerge. It is better to use decomposed manure and leaf mold soil. The second is post-flowering fertilizer. Apply decomposed cake fertilizer residue after the flowers fade to supplement the nutrients consumed by flowering. The third is to fertilize in winter and apply manure after the leaves fall to ensure that the roses survive the winter safely. Potted roses can be fertilized with thin fertilizer and water for a long time, once every 10-15 days after harvest. Roses are drought-tolerant. Generally, those grown on the ground do not need to be watered. During hot summer or spring drought, they need to be watered once every 20-30 days. Water potted plants once every 2 days, and once a day during hot summer or spring drought.
4. Plastic pruning generally does not require pruning. Old plants can be pruned to remove dense branches, dry branches, and diseased and insect-infested branches. When roses bloom, they can be picked as they bloom or fall. They will bloom again after picking, otherwise they will only bloom once.
5． Flowering period control: Generally, the natural flowering period is the best.