If you are raising rose on the roof, you must insulate the flowerpot. Think about the noon in summer, the surface temperature is not so high. Can the root stand the flowerpot directly on the ground?
Especially for the gallon basin and green mountain basin, the bottom of the basin is very thin. If they touch the ground directly, they will burn their roots in the daytime. At night, the ground heat will quickly spread out, and the bottom of the basin will be steamed, which is not good for the roots.
So we must find some wooden blocks, bricks or foam boards, and put them under the flowerpot. This is really effective. You can measure it. The flowerpot and the ground are really not a temperature.
Many flower friends use plastic pots and ceramic pots to raise rose. These two pots have a disadvantage: slow heat dissipation and fast heat absorption. After the sun exposure, the roots on the edge of the pot will be burned to death, so it's better to coat the pot with a large basin.
Set basin can play the role of heat insulation, the outside basin to autumn just can be used to change the basin for the rose, also not waste.
Between the two flowerpots, wet cloth towels, water moss and weeds can be stuffed. After spraying water, it can not only insulate heat, but also cool down.
The aluminum foil paper for barbecue and baking is wrapped outside the flowerpot, which is very useful to deal with the sun exposure and can obviously reduce the temperature of the flowerpot.
There are flower friends to test, the same 2 pots of rose, the pot without wrapping tin paper, the wall of the pot is hot, the tray is also hot, the pot with tin paper feels normal temperature, not hot at all.
In summer, the water evaporates quickly, and the amount of watering is larger than before. However, in order to prevent "cold", we can't complete the task by pouring through as much water as before, and we need to cycle watering.
To be specific, first pour water, cool and moisten the soil, do not pour thoroughly, and then move to a cool place, every half a day, after it adapts, pour thoroughly again, and ventilate after pouring.
There will be a lot of showers in summer. If the rain is very small and the rainfall is relatively small, water the soil after the rain stops. Otherwise, it will be wet and dry. It is not good for the root, and it will cause black pole.
The watering time should be before 9 a.m. and 2 hours after sunset. Do not pour cold water when the basin soil is hot.
Although rose is a relatively heat-resistant and sun resistant plant, it has thousands of varieties. The heat-resistant and sun resistant properties of each variety are different.
Generally, leaves are not afraid of sunshine, and the brighter the surface of the leaves is, the more resistant they are to sunshine; the matte leaves are relatively worse, and they are easy to burn and scorch, so they need to shade.
Ground rose, due to the earth gas, large soil area, coupled with the constancy of ground temperature, is incomparable with potted plants, so it is more heat-resistant than potted plants.
The mature seedlings, big seedlings and strong seedlings planted for many years must be more heat-resistant than the small ones and weak ones.
The rose grafted with shanmuxiang or wild rose has better heat resistance because of its strong root system.
Each person's Rose seedling, growth and area are different, and their sun shading needs are also different. According to their own actual situation, if they are not sure, it is better to cover under the hot sun than not.
Some people may say that I'm ok if I don't cover it, then you can do it. There's no requirement for this. It depends on the actual growth of rose.
As for pruning, the leaves of Chinese rose should be kept as much as possible in summer, mainly with less pruning and light pruning.
Think about it. On a hot day, the human body needs to sweat constantly through the skin to take away the heat in the body. Similarly, the Chinese rose also cools down through the transpiration of a large number of leaves to prevent sunburn.
At the same time, it is also used to ensure the energy supply through the light cooperation of leaves, which are the most basic conditions to ensure the resistance of rose to the hot summer.
So in summer, the rose can't be cut again. If it's not done well, it will be cut again. Don't think about the plant type too much, only do the appropriate light cutting, for the sky high can give it a top.