In colder climates or extremely cold weather, evergreen azaleas may drop most of their leaves during the winter. Leaves that turn brown, die and drop off during the summer usually indicate a problem with the azalea.Click to see full answer. Also, how do you winterize azaleas?To properly winterize your Azaleas, saturate their root structure with water when you start seeing frost and the ground starts to freeze. Do this early in the morning, and then again in the evening. This will help your Azaleas acclimate to freezing during the winter.Similarly, do azaleas stay green year round? The leaves of both types are typically solid green, but some varieties of each may have white or yellow mottling or edges. Evergreen azaleas typically keep most of their foliage year round, but deciduous plants lose all of their leaves in the fall, with new growth forming in the spring. Also to know, how cold is too cold for azaleas? Certain rhododendrons and deciduous azaleas can survive temperatures as low as -35°F (-37°C). It is normal for some rhododendrons to exhibit leaf droop and curl at around 32°F (0°C).; the lower the temperature the tighter the curl. Leaf movement occurs rapidly and it is reversible as temperature warms.Why did my azaleas die?A: Azaleas drop old leaves, but also can drop leaves if the plants are stressed. Fungal diseases can strike azaleas and cause browning leaf margins and other symptoms. Dieback, a fungal disease triggered by stress, causes foliage to wilt and yellow and twigs and branches to die.

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