shrub

Autumn Twist Encore Azalea

The Story

Plant Bio

Encore Azaleas are a group of hybrid rhododendrons bred for their ability to bloom in spring, summer, and fall. They require more sun than traditional azaleas to produce multiple flushes of flowers.

'Roblev', or Autumn Twist, produces unique bi-color flowers of purple with white stripes and occasional solid purple blooms. It is a robust grower with dark green foliage and provides color across three seasons.

Uses & Benefits:

Offers an exceptionally long blooming season, providing vibrant color from spring through fall. The unique striped flowers are a conversation starter, and the evergreen foliage adds year-round interest.

Its moderate size makes it versatile for use in foundation plantings, mixed borders, or as a low hedge. It also performs well in containers, bringing long-lasting color to patios and decks.

The multi-season blooms provide a continuous nectar source for pollinators like bees and hummingbirds, supporting them throughout the growing season when other food sources may be scarce.

Essentials

At a Glance

Plant Type

Shrub

Height

54 inches

Width

54 inches

Light

Full Sun, Partial Sun

Zones

6, 7, 8, 9, 10

Water

Medium

Humidity

Moderate to high

Lifespan

Long-lived shrub

Native To

Hybrid origin

Toxicity

All parts are toxic if ingested

Bloom period

Late spring – Mid-fall

In flower about 6 months of the year

Planting

How to Grow

Select a site with at least 4-6 hours of sun and acidic soil.
Dig a hole twice as wide as the container.
Ensure the top of the root ball is level with or slightly above the soil.
Backfill with amended soil, firming it gently.
Water deeply after planting to settle the soil.
Mulch to retain moisture and keep roots cool, avoiding the stem.

Pro Tip

Provide at least 4-6 hours of direct sun for best reblooming performance, but offer afternoon shade in the hottest climates.

Keep It Thriving

Care Guide

Do

Water regularly, especially during the first year and in summer heat.
Fertilize after the spring bloom cycle.
Provide excellent drainage.
Give it enough sun to promote flowering.

Don't

Do not plant in heavy, waterlogged soil.
Avoid deep cultivation around the shallow root system.
Don't perform heavy pruning, as it can reduce flowering.
Don't let the plant dry out, as this will inhibit reblooming.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Multi-season flowering accentColorful mass plantingVibrant container specimen

Companion Plants

Loropetalum chinense Heuchera Hydrangea paniculata Gardenia jasminoides Carex

Multiply

Propagation Methods

Good to Know

Common Questions

Autumn Twist Encore Azalea questions

What zones can Autumn Twist Encore Azalea grow in?

Autumn Twist Encore 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 Twist Encore Azalea deer resistant?

Not reliably. Deer may browse Autumn Twist Encore Azalea, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Autumn Twist Encore Azalea bloom?

Autumn Twist Encore Azalea typically blooms in late 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 Twist Encore Azalea need full sun?

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