shrub

Autumn Angel Azalea

Rhododendron 'Robleg'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Shrub

Height

36 inches

Width

42 inches

Light

Full Sun, Partial Sun

Zones

6, 7, 8, 9

Water

Medium

Humidity

Prefers moderate to high

Lifespan

Long-lived evergreen shrub

Native To

Hybrid

Toxicity

All parts are toxic if ingested

The Story

Plant Bio

Encore Azaleas are a group of hybrid rhododendrons known for their ability to bloom in spring, summer, and fall. They are generally more sun-tolerant than traditional azaleas. 'Robleg', sold as Autumn Angel, is a compact Encore Azalea that produces masses of pure white, single to semi-double flowers. Its reblooming nature provides color for multiple seasons.

Bloom Period:

EarlyLate

Uses & Benefits:

Autumn Angel provides a stunning display of pure white flowers not just once, but up to three times a year, ensuring continuous color. Its compact size and evergreen nature provide year-round structure.

Its manageable size makes it ideal for small gardens, foundation plantings, and decorative containers. It can be used in mass plantings for a dramatic effect or as a low, informal hedge.

The repeated blooming cycles offer a prolonged nectar source for pollinators like bees, butterflies, and hummingbirds, supporting them from spring through fall.

Marketplace

Where to Buy

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Planting

How to Grow

Select a site with well-drained, acidic soil.
Dig a hole as deep as the root ball and twice as wide.
Incorporate organic matter like composted pine bark.
Set the plant so the top of the root ball is slightly above soil level.
Backfill with amended soil and water in well.
Apply a layer of acidic mulch to conserve moisture.

Pro Tip

Plant in a location with at least 4-6 hours of sun for best reblooming, preferably morning sun with some afternoon shade.

Keep It Thriving

Care Guide

Do

Provide consistent water, especially during establishment and dry periods.
Maintain an acidic soil pH between 5.5 and 6.5.
Mulch to protect the shallow root system.
Fertilize after the spring bloom cycle is complete.

Don't

Do not plant in heavy, waterlogged clay soil.
Avoid deep cultivation near the plant's base.
Don't let the root ball dry out completely.
Avoid pruning late in the season, which can inhibit future blooms.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Mulch
Pest Check
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Bright accent for mixed bordersReliable foundation planting with season-long colorLuminous mass planting

Companion Plants

Loropetalum chinense Gardenia jasminoides 'Radicans' Heuchera Hosta Carex oshimensis 'Evergold'

Multiply

Propagation Methods

Good to Know

Common Questions

Autumn Angel Azalea questions

What zones can Autumn Angel Azalea grow in?

Autumn Angel Azalea is hardy in USDA Zones 6–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Autumn Angel Azalea deer resistant?

Yes — Autumn Angel Azalea is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Autumn Angel Azalea bloom?

Autumn Angel Azalea typically blooms in early spring through mid-fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Autumn Angel Azalea need full sun?

Autumn Angel Azalea does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.