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Tree Guide

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Formosa AzaleasAzalea indica 'Formosa'

  • Formosa Azalea - Azalea indica Formosa shrub
Hailing from southern India, this evergreen shrub is a true eye-catcher. Large magenta flowers emerge in the spring, and in some areas the plant event has a second bloom in the fall. It is commonly used for a mass planting, specimen, foundation plant, border, or hedge.

If you live in hardiness zones 8–10, the Formosa azaleas would make a standout addition to your landscape.

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Hardiness Zones

The formosa azaleas can be expected to grow in Hardiness Zones 8–10. View Map

Tree Type

This shrub is considered both an evergreen shrub and a flowering shrub. It keeps its foliage year-round and blooms in a profusion of spring flowers.

Mature Size

Formosa azaleas grow to a height of 6–8' and a spread of 4–6' 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 and partial shade are best for this shrub, meaning it prefers a minimum of 4 hours of direct, unfiltered sunlight each day.

Soil Preference

Formosa azaleas prefer acidic, moist, well-drained soil but tolerates periodic dry soil once established.

Attributes

This shrub:
  • Produces 3" funnel-shaped magenta flowers, each with a darker accent blotch, that bloom in the spring. In some areas, the plant will bloom again in the fall.
  • Features elliptical, medium green leaves 1½" in length that persist throughout the year.
  • Grows in a rounded shape.
  • Should be protected from the wind.
  • Works well as a mass planting, specimen, foundation plant, border or hedge.

Wildlife Value

The flowers attract butterflies and bees.

History/Lore

This shrub comes from southern India.