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Red Azaleas Mollis HybridRhododendron x kosteranum

  • Red Azaleas Mollis Hybrid - Rhododendron x kosteranum bush
Originally developed in Belgium and Holland, the beautiful Mollis hybrid azaleas have been hybridized to be cold-hardy down to -10 degrees. These lush, deciduous shrubs bear spectacular clusters of vibrant red flowers to brighten your home each spring and also provide beautiful fall color.

  • Produces intense, rosy-red spring blossoms
  • Provides beautiful fall color
  • Is a cold-hardy variety
  • Will be delivered as a 3" plug

Hardiness Zones

The red azaleas mollis hybrid can be expected to grow in Hardiness Zones 5–8. View Map

Tree Type

Mature Size

Red Mollis hybrid azaleas grow to a height of 4–6' and a spread of around 4' at maturity.

Growth Speed Slow Growth Rate

This shrub grows at a slow rate, with height increases of less than 12" per year.

Sun Preference

Full sun is the ideal condition for this shrub, meaning it should get at least 6 hours of direct, unfiltered sunlight each day.

Soil Preference

Red Mollis hybrid azaleas grow in acidic, loamy, moist, rich, sandy, silty loam and well-drained soils.


This shrub:
  • Provides beautiful fall color, with the vibrant green leaves turning multicolored as the season changes.
  • Produces large clusters of intense, rosy-red blossoms.
  • Grows in a rounded shape.


Mollis hybrid azaleas originated in Holland and Belgium in the 1870s.