North America Native Plant

Plumleaf Azalea

Botanical name: Rhododendron prunifolium

USDA symbol: RHPR2

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states  

Synonyms: Azalea prunifolia Small (AZPR2)   

Plumleaf Azalea: A Rare Summer-Blooming Native Worth Protecting If you’ve ever wished your azaleas would bloom later in the season, let me introduce you to a true gem: the plumleaf azalea (Rhododendron prunifolium). While most azaleas put on their show in spring, this remarkable native shrub saves its spectacular display ...

Rare plant alert!

Region: Alabama

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘ Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Region: Alabama

Plumleaf Azalea: A Rare Summer-Blooming Native Worth Protecting

If you’ve ever wished your azaleas would bloom later in the season, let me introduce you to a true gem: the plumleaf azalea (Rhododendron prunifolium). While most azaleas put on their show in spring, this remarkable native shrub saves its spectacular display for the heat of summer, making it a standout performer when most other flowering shrubs have called it quits for the year.

What Makes Plumleaf Azalea Special

The plumleaf azalea, also known by its scientific name Rhododendron prunifolium (and formerly called Azalea prunifolia), is a perennial shrub that typically grows as a multi-stemmed woody plant reaching 4-5 meters (13-16 feet) in height. What sets this beauty apart from its spring-blooming cousins is its incredible timing – it bursts into bloom in July and August with stunning orange to red tubular flowers that seem to glow in the summer landscape.

Native Range and Conservation Status

This azalea is a true southeastern native, calling Alabama and Georgia home. However, here’s where things get serious: plumleaf azalea is considered vulnerable, with a Global Conservation Status of S3. In Alabama, its status is even more precarious at S2S3. This means the species is rare and local throughout its range, with typically only 21 to 100 occurrences existing in the wild.

Important note for gardeners: Due to its vulnerable status, if you choose to grow plumleaf azalea, please ensure you’re purchasing from reputable nurseries that use responsibly sourced, nursery-propagated plants rather than wild-collected specimens.

Why Gardeners Love (and Should Protect) This Plant

Beyond its conservation importance, plumleaf azalea offers several compelling reasons to include it in your landscape:

  • Unique summer bloom time when few other shrubs are flowering
  • Stunning orange to red flowers that attract hummingbirds and butterflies
  • Native plant that supports local ecosystems
  • Excellent specimen plant for woodland gardens
  • Naturalistic appearance that fits perfectly in native plant landscapes

Perfect Garden Settings

Plumleaf azalea thrives in woodland gardens and naturalistic landscapes where it can mimic its natural habitat. It works beautifully as a specimen plant or incorporated into native plant gardens where its summer blooms can steal the show. The shrub fits perfectly into designs that emphasize native plants and sustainable gardening practices.

Growing Conditions and Care

Like most azaleas, plumleaf azalea prefers:

  • Light: Partial shade with protection from harsh afternoon sun
  • Soil: Moist, well-drained, acidic soil
  • USDA Hardiness Zones: 6-8
  • Moisture: Consistent moisture without waterlogging

Planting and Care Tips

Successfully growing plumleaf azalea requires attention to a few key details:

  • Plant at the same depth it was growing in the container – avoid planting too deep
  • Apply a thick layer of organic mulch to keep roots cool and retain moisture
  • Provide consistent moisture, especially during dry periods
  • Choose a location with morning sun and afternoon shade
  • Ensure good air circulation to prevent disease issues

Wildlife and Pollinator Benefits

The summer blooms of plumleaf azalea are a magnet for hummingbirds, making it an excellent choice for wildlife gardens. Butterflies and native bees also visit the flowers, adding to its value as a pollinator plant. By choosing this native species, you’re supporting the intricate web of relationships between plants and wildlife that have evolved over thousands of years.

The Bottom Line

Plumleaf azalea represents both an opportunity and a responsibility for gardeners. Its stunning summer blooms and native status make it a valuable addition to appropriate landscapes, while its vulnerable conservation status reminds us of our role in plant conservation. If you choose to grow this remarkable shrub, you’ll not only enjoy its unique beauty but also participate in preserving a piece of our native botanical heritage.

Remember: always source your plants responsibly, and consider this beautiful native as part of a broader commitment to supporting biodiversity in your own backyard.

Plumleaf Azalea

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Ericales

Family

Ericaceae Juss. - Heath family

Genus

Rhododendron L. - rhododendron

Species

Rhododendron prunifolium (Small) Millais - plumleaf azalea

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA