(1) Ambient temperature
Roses are light-loving plants, sufficient light is conducive to the growth and flowering of roses, it is recommended to keep them by the window or yard in the sun, when the light is too strong, it is appropriate to shade and avoid the exposure of the scorching sun. Roses are placed in a poorly lit room for a long time, poor ventilation will cause the leaves to turn yellow, such as this situation to remove the yellow leaves in time and put them in a well-ventilated place. The optimal growing temperature for roses is 22-28°C.
(2) Water and fertilizer management
Because roses are root plants, thin leaves can not store water, so in the maintenance process must ensure sufficient water, strictly grasp the principle of "not dry, do not water, water through", it is recommended to use the method of immersion pot watering, so that the substrate fully absorbs water. Roses bloom in all seasons, dense branches and leaves, the demand for fertilizer is large, fertilizer concentration is too high and too low will affect rose growth, it is recommended to directly purchase 3-4 months of slow-release fertilizer for fertilization, can effectively avoid insufficient fertility or high concentration of burning roots.
(3) Control the height and top
If you want roses to bloom continuously, plump plants and thick branches, you need to control the height and top and prune in time. First, prune the withered residual flowers, pruning from three or four nodes down the flowers to promote bud points. The residual flowers will be out of uniform height after pruning, cut the long branches appropriately to keep them at the same height. The height of the plant can be combined with its own needs, if you want the tall plant in the garden, then top from the middle or bottom of the three-quarters of the plant, if it is a potted planting, the plant should not be too high, from the bottom from one-half of the position to top, after topping, the water absorption of the plant will be reduced, the frequency of watering can be reduced in combination with the actual situation, to avoid excessive moisture rotten roots.
(4) Pest control
Rose is commonly known as "medicine jar", pay attention to prevention, the disease treatment is the right medicine, once the single pot disease is recommended isolation treatment, to prevent the spread. The main pests are red spiders, aphids, thrips, etc., minor pests can be first physically controlled, remove the damaged parts, high-pressure water to wash off the pests, alcohol wipe the leaves, hang the yellow board, etc., it is really not possible to consider buying the corresponding agent for spraying. Common diseases include downy mildew, powdery mildew, black spot, etc., you can buy drugs for common diseases every half month for preventive spraying, regularly clean up the dead leaves and weeds in the pot, clean the bottom leaves, and keep the environment ventilated; If a disease is serious, the corresponding agent spray is purchased separately.