Plants in the temperature is too low will enter the dormant period, dormant plant leaves in the glucose will become red under the stimulation of low temperature, if the rhododendron leaves red is not in autumn and winter, we have to consider placing it in a higher temperature place for maintenance.
In summer, if the sun's rays are too strong, it can also cause the leaves of rhododendrons to turn red. If we don't want to see a red leaf we can also give it proper shade maintenance. However, if it is a potted flower, we must pay attention to whether the moisture of the pot soil is too dry and causes the old leaves to turn red.
Don't care too much about the redness of the leaves of the rhododendron, which is not a bad growth phenomenon and will not cause the plant to die. Especially the ground-grown azaleas, we don't have to worry!
![Rhododendron leaves are rolled, do not flower, try to change the soil, with dry pine needles to raise, easier to flower[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)