How can roses not wither
To keep roses from dying, you need at least 6 hours of light a day. The proper temperature is 15°C to 25°C. Too high a temperature will not be suitable for the growth of roses and cause them to wither.
Rose is masculine plant, sunshine is sufficient color thick, fragrance is also thick. Less than 8 hours of sunshine in the growing season will produce no flowers. The air humidity requirements are not very strict, rust and powdery mildew occur when the temperature is low and humidity is large. The flowering season requires a certain humidity in the air. Oil yield will decrease when drying at high temperature. The requirement of soil ph of rose is not strict, and it can grow normally from slightly acidic soil to slightly alkaline soil.
Areas covered with snow in winter can tolerate the low temperature of -38℃ to -40℃, and areas without snow can also tolerate the low temperature of -25℃ to -30℃, but not the dry wind in early spring. Where the soil has not thawed and the ground is windy, branches are often blown dry. If the soil has thawed and the roots continue to carry water and nutrients to the stem, the wind cannot do serious damage. Areas with dryness greater than 4 require irrigation to develop properly.
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