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Rhododendron decorum (Great White Rhododendron)

Common Name(s): Great White Rhododendron, Midseason Rhododendron, Evergreen Rhododendron

 

Botanical Name: Rhododendron decorum Franch.

 

Synonyms: Azalea decora (Franch.) Kuntze

Family: Ericaceae

Distribution: Native to SE. Tibet to China (SW. Sichuan, NW. Yunnan, W. Guizhou) and N. Indo-China.

Ornamental Uses of Rhododendron decorum (Great White Rhododendron):

  • Specimen Plant: Serves as a stunning focal point with its large, fragrant white flowers and lush evergreen foliage.
  • Woodland Gardens: Thrives in shaded or partially shaded areas, making it ideal for woodland settings.
  • Mixed Shrub Borders: Combines beautifully with other shrubs and perennials in mixed borders, adding height and elegance.
  • Fragrance Gardens: Adds a delightful scent to gardens during its blooming season in spring to early summer.
  • Foundation Planting: Enhances building foundations with its ornamental flowers and dense growth habit.
  • Cottage Gardens: Fits well in informal garden styles with its classic, showy blooms.
  • Screening and Privacy: Works as a decorative privacy screen or hedge due to its dense foliage.
  • Seasonal Interest: Provides year-round greenery and spectacular springtime blooms.
  • Pollinator Attraction: Attracts bees and other pollinators with its nectar-rich flowers.
  • Low-Maintenance Landscaping: Ideal for low-care gardens in regions with acidic, well-drained soil.
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Rhododendron decorum (Great White Rhododendron)

This fragrant, sizable evergreen shrub or small tree is known for its stunning spring blooms, appealing bark, and glossy dark green foliage. Flowering abundantly from mid to late spring, this variety of Rhododendron produces loose clusters of 7 to 12 large, highly aromatic, funnel-shaped blossoms, either white or tinged with pink, featuring a yellowish-green spot in the throat. The leaves are oval, leathery, and typically begin with a bronzed tint, maintaining their beauty throughout the year. This hardy, low-maintenance plant thrives in a variety of conditions, including sunny, warm, and dry environments, and is also adaptable to neutral pH soils.

Cultivation: This shrub typically grows upright with a dense or occasionally sprawling form, reaching heights of 1.2 to 4.5 meters and spreading 0.9 to 3 meters wide. Thriving in partial sun or dappled shade, it prefers rich, moist, well-drained, and acidic soil. Ensure the plant is set shallowly in a spot sheltered from harsh winter winds. Protect the buds and blooms from frost damage by covering or planting in a frost-free area. Apply a yearly mulch of leaf mold to help retain soil moisture, suppress weeds, and maintain a cooler root zone.

Etymology: The genus name Rhododendron is derived from the Greek words rhodos, meaning rose, and dendron, meaning tree, referring to the plants rose-like flowers and woody growth habit. The specific epithet decorum comes from the Latin word decorus, meaning graceful or elegant, referring to the plants attractive and refined appearance.

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