Rhododendron calendulaceum
Azalea
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Azalea (Rhododendron calendulaceum) - Description
An east coast native ranging from southern New York to Florida. Its native range is throughout the Appalachian mountains in the woodland areas. A deciduous azalea, who's blooming happens after the shrub foliates for the season. And bloom it does with amazing bright orange or yellow flowers that literally dominate the entire plant. This Azalea has been a fantastic parent in many hybridizing programs.
Azalea (Rhododendron calendulaceum) - Blooming
Blooms in early Spring. There are many varieties of Rhododendrons and Azaleas that come in many different colors and styles.
Azalea (Rhododendron calendulaceum) - Growth
Rhododendrons do best with filtered sunlight. Generally, these plants will need more protection from the sun as the climate gets sunnier and hotter. They do best in cooler, temperate climates that have sufficient rainfall.
Azalea (Rhododendron calendulaceum) - Planting
Sow seeds in soil that is acidic as soon as the seeds are ripe or in early spring. Maintain the temperature between 55 and 65°F (18°C). It should be noted that Rhododendrons readily hybridize and seeds collected from your garden may produce offspring that do not closely resemble the parents.
Azalea (Rhododendron calendulaceum) - Pest
Prone to whitefly, lace bugs, scale, caterpillars and aphids. Susceptible to powdery mildew, leafy gall and root rot.
Azalea (Rhododendron calendulaceum) - Interesting facts
The name Rhododendron literally translates to "rose tree". The species R. catawbiense is found throughout the Appalachian Mountains. Not only is it the state flower of West Virginia, it is also on the state flag.
Azalea (Rhododendron calendulaceum) - Soil and irrigation
Need fast-draining soils that are rich and acidic. Does best if the soil also retains sufficient quantities of water (amend soil with organic matter to do so). These plants need more air in the root zone than most plants do. Plants that are yellowing and that have leaves that are dropping are most likely sitting in water and the roots are drowning.
