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A picture of a Butterfly Azalea

Butterfly Azalea

Rhododendron calendulaceum

Also known as

Flame Azalea

Rhododendron calendulaceum 1 by Bostonian13 (CC BY-SA 3.0)

Full Sun
Moderate care
Moderate watering
Half-hardy

H3

RHS hardiness

-5°C

Minimum temperature

Expected size

Height
Spread

2.4m

Max

2.4m

1.5m

Min

1.5m

Flowering

  • spring
  • summer
  • autumn
  • winter

This plant has no fragrance

More images of Butterfly Azalea

A photo of Butterfly Azalea
A photo of Butterfly Azalea
A photo of Butterfly Azalea
A photo of Butterfly Azalea
A photo of Butterfly Azalea

Butterfly Azalea Overview

Flame or Butterfly Azalea is one of the most spectacular flowering shrubs of the Appalachian Mountains. It has bundles of bright orange flowers end of winter into spring,often fragrant. The leaves turn into different colors in Autumn before they fall.

Common problems with Butterfly Azalea

Vine weevil, whitefly, leafhoppers, lacebugs, scale, caterpillars, aphids. Powdery mildew, rust, bud blast, leaf gall, petal blight, root rot, and chlorosis (due to insufficient soil acid).

How to harvest Butterfly Azalea

Harvest mature, dried and opened seed pods.

How to propagate Butterfly Azalea

Seed

Combine seeds loosely with sphagnum moss and sprinkle lightly over a 2:1 perlite/peat mixture. Germinate under mist or a plastic tent to keep humid.

Cuttings

Root semi-ripe cuttings in late summer or autumn.

Layering

Layer in autumn. Place a low growing branch on the soil and cover with soil or a rock. Allow roots to develop over the winter months and seperate from motherplant when well-developed roots.

Special features of Butterfly Azalea

Pot plant

Attractive flowers

Autumn colour

Other uses of Butterfly Azalea

Grown mainly for the beauty of the flowers. Ground cover & interesting leaves. Suitable for northern and eastern aspects.