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Stewartstonian Azalea

Rhododendron x 'Stewartstonian'

  • Brilliant Orangy-Red Blooms Light up Spring Gardens with Minimal Pruning Required
  • Thrives in Zones 5-8
  • Grows 4-5 ft Tall
  • Showy Red, Orange Blooms From Early Spring to Late Spring
  • Ideal for Border or Small groups
Regular price $3376
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Plant Size

Specifications

Plant specifications
Plant Characteristics Evergreen, Flowering, Cold hardy, Attracts pollinators
Hardiness Zone 6a to 9b
Sunlight Full sun, Partial shade
Height 4-5 ft
Width 4-5 ft
Watering Needs High
Preferred Soil Clay, Loamy, Peaty, Sandy
Growth Rate Moderate
Growth Habit Bushy
Blooms In Spring
Flower Color Red, Orange
Foliage Color Green
Pet Safety Toxic to pets
Suitable Space Outdoors
Plant Name Azalea
Botanical Name Rhododendron x 'Stewartstonian'
Species x
Cultivar Stewartstonian
Class Ericales, Magnoliopsida
Does Not Ship To AK, HI, ID, MT, PR

Frequently Asked Questions

Do azaleas need full sun?

  • Azaleas prefer partial shade over full sun, thriving best with morning sun exposure. The Stewartstonian variety particularly loves part shade conditions, which allows it to flourish under larger trees. Plant yours where it gets morning light but afternoon protection for optimal blooms and foliage.

What planting zones is the Stewartstonian Azalea hardy in?

  • The Stewartstonian Azalea is cold hardy in USDA zones 5 through 8. This broadleaf evergreen thrives in these moderate climates, maintaining its foliage year-round while producing stunning spring blooms. Shop at Nature Hills for healthy specimens that will establish well in your zone.

What is the growth rate of the Stewartstonian Azalea - slow, moderate, or fast?

  • Stewartstonian Azalea has a moderate growth rate, reaching its mature size of 4-5 feet in height and width over several years. This steady pace makes it reliable for planning landscapes in zones 5-8. Allow adequate spacing when planting to accommodate its full rounded form.

When does the Stewartstonian Azalea bloom and what color are the flowers?

  • Stewartstonian Azalea blooms in spring with brilliant orangy-red trumpet-shaped flower clusters. The scarlet blossoms attract hummingbirds, butterflies, and early bees. Plant in partial shade with morning sun for the best spring flower display.

Is the Stewartstonian Azalea deer resistant?

  • Stewartstonian Azaleas are not typically deer resistant, as deer often browse azalea foliage and buds. In zones 5-8 where this variety thrives, consider protective fencing or deer repellent sprays during growing season. Shop deer-resistant alternatives at naturehills.com if deer pressure is severe in your area.

Does this azalea require acidic soil and do I need to amend my soil?

  • Yes, Stewartstonian Azaleas need acidic soil with a pH between 4.5-6.0 to thrive. Most garden soils are too alkaline, so amend with peat moss, compost, or sulfur before planting. Test your soil pH first and aim for consistently moist, well-draining conditions.

How much fertilizer does the Stewartstonian Azalea need and when should I apply it?

  • Stewartstonian Azaleas need light feeding with acid-loving plant fertilizer in early spring before blooming begins. Apply a second light dose after flowers fade in late spring. Use an organic or slow-release fertilizer to avoid burning the shallow root system.

Will the Stewartstonian Azalea survive winter temperatures in zone 5 without protection?

  • Yes, Stewartstonian Azalea is cold hardy in zone 5 without protection. This broadleaf evergreen naturally sheds older leaves in winter and replaces them with fresh growth each spring. Provide a thick mulch layer to protect the shallow root system from temperature fluctuations.