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Horizon Monarch Rhododendron

Rhododendron 'Horizon Monarch'

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Horizon Monarch Rhododendron

Rhododendron 'Horizon Monarch'

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The Horizon Monarch Rhododendron is one of the most striking yellow-flowering rhododendrons available, producing large rounded flower clusters in soft creamy yellow with vivid deep red throats and delicate salmon-pink frilled edges. Blooming in mid-spring, the flowers emerge from scarlet buds and create an unforgettable display against rich dark green evergreen foliage. Growing into a broad upright shrub about 5 to 6 feet tall and wide, this vigorous hybrid brings elegant color and year-round structure to woodland gardens, shaded borders, and foundation plantings. Award-winning and easy to grow, it thrives in partial shade and moist acidic soil, delivering exceptional beauty with very little maintenance.

  • Large creamy yellow flowers with vivid red throats and pink-edged petals
  • Scarlet flower buds create additional spring interest before blooming
  • Evergreen dark green foliage provides year-round color and structure
  • Excellent specimen plant for woodland gardens and shaded borders
  • Award-winning hybrid with vigorous growth and reliable performance

The Horizon Monarch Rhododendron grows best in partial shade or filtered sunlight with protection from hot afternoon sun. Plant it in moist, acidic, well-drained soil enriched with organic matter, and mulch regularly to help maintain cool root conditions. Water consistently during dry periods, especially while establishing, but avoid soggy soil. Minimal pruning is needed beyond light shaping after flowering, and established plants are generally resistant to pests and deer.

About

Botanical Name:

Rhododendron 'Horizon Monarch'

Mature Width:

5-6 ft

Mature Height:

5-6 ft

Grows Well In:

Zones 5-8

Zone Map

Sun Needs:

Partial Sun, Shade

Water Needs:

Moderate

Growth Rate:

Medium

Flower Color:

Pink, Red, Yellow

Flowering Season:

Spring

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