Alphabetical Plant Listing

Rhododendron 'Mount Saint Helens'

Mount Saint Helens' Rhododendron, 'Mount Saint Helens' Azalea, Late Midseason Azalea, Deciduous Azalea


Prized for its multi-colored blooms and remarkable cold hardiness, Rhododendron 'Mount Saint Helens' is a stunning, medium-sized, deciduous Azalea. Opening from red buds in late spring to early summer, it bears abundant rounded trusses of 11 trumpet-shaped, rich salmon pink flowers with a bold golden-orange blotch for the most striking display. Extremely floriferous, this Girard hybrid features a handsome foliage of olive green leaves that turns golden-bronze in fall. This late midseason Azalea is quite tough and can withstand temperatures as low as -25°F (-32°C), without having its flower buds damaged.

  • Grows with an upright, spreading habit, up to 5-6 ft. tall and wide (150-180 cm). 
  • Winner of the Rhododendron of the Year Award of the American Rhododendron Society for the Great Lakes, South West, and South Central regions.
  • A sun to part shade lover, this plant is easily grown in moist, acidic, humusywell-drained soils. Tolerates a fair amount of sun in cool northern summers. Plant shallowly in a location protected from strong winter winds. Protect from frost to prevent damage to flowers. Mulch annually with leaf mold to retain moisture, control weeds, and cool the soil.
  • Perfect for shrub borders or mixed borders, as a flowering hedge or privacy screen, foundation plantings, and shade gardens
  • Attracts butterflies, hummingbirds, and birds
  • Removing spent flowers promotes new growth.
  • All parts of the plant are poisonous if ingested.
  • Toxic to dogs, toxic to cats, toxic to horses.

Rhododendron and Azalea: How To Grow And Care with Success

Want to learn how to grow and care for rhododendron and azalea flowers like a pro? Follow these simple steps and enjoy their beautyRead More

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Requirements

Hardiness 3 – 7
Heat Zones 1 – 7
Climate Zones 1A, 1B, 2A, 2B, 3A, 3B, 4, 5, 6, 7, A2, A3
Plant Type Shrubs
Plant Family Azaleas - Rhododendrons, Rhododendron - Azalea
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early)
Height 5' – 6' (150cm – 180cm)
Spread 5' – 6' (150cm – 180cm)
Spacing 60" – 72" (150cm – 180cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid
Soil Drainage Moist but Well-Drained
Characteristics Fragrant, Plant of Merit, Showy
Tolerance Rabbit
Attracts Butterflies, Hummingbirds
Garden Uses Beds and Borders, Hedges and Screens
Garden Styles City and Courtyard, Informal and Cottage, Traditional Garden

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Guides with Azaleas - Rhododendrons

Great Plant Combination Ideas with Rhododendron - Azalea

Guides with Rhododendron - Azalea


Copyright: Image Botanic LLC

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 3 – 7
Heat Zones 1 – 7
Climate Zones 1A, 1B, 2A, 2B, 3A, 3B, 4, 5, 6, 7, A2, A3
Plant Type Shrubs
Plant Family Azaleas - Rhododendrons, Rhododendron - Azalea
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early)
Height 5' – 6' (150cm – 180cm)
Spread 5' – 6' (150cm – 180cm)
Spacing 60" – 72" (150cm – 180cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid
Soil Drainage Moist but Well-Drained
Characteristics Fragrant, Plant of Merit, Showy
Tolerance Rabbit
Attracts Butterflies, Hummingbirds
Garden Uses Beds and Borders, Hedges and Screens
Garden Styles City and Courtyard, Informal and Cottage, Traditional Garden

Guides with Azaleas - Rhododendrons

Great Plant Combination Ideas with Rhododendron - Azalea

Guides with Rhododendron - Azalea

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