Add mulch after planting and again each year. The azalea keeps the roots near the soil surface and this annual decomposition of mulch and organic matter will maintain a good environment for new roots and help in moisture retention. If you plant this fall, don't be misled into thinking water is not needed. Pay attention to what Mother Nature provides and supplement as needed to prevent the roots from drying out. If record cold is expected, an old blanket or canvass may be needed.
Azaleas get more hardy with age.
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