Holden's™ Red Rhododendron

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Hardiness
Light Flexibility
Compactness
Disease Resistance
Insect Resistance

Holden's™ Red Rhododendron

Botanical Name

Rhododendron ‘Holden Rhodo221’ PP#35,416

Plant Type

Evergreen

Zone
Zone 5 - 9, down to -20° F Find Your Zone
Light Needs
Sun to Part Shade
Mature Size

Height 3-4'

Spread 3-4'

Plant size illustration

Description

The Holden Rhododendron offers exceptional disease resistance, heat and humidity tolerance, striking spring blooms, and a compact, manageable size. Developed by the famous Holden Arboretum, this plant was originally bred for resilience in northern climates, making this cultivar a top choice for gardeners who have previously struggled with root rot and cold hardiness Thick, leathery, evergreen leaves are a fantastic backdrop for the spectacular floral show in the Spring, where it features prolific, large clusters of fuchsia flowers. It is compact and tidy, making it ideal for placement anywhere around the home. And it’s reliably hardy down to Zone 5 (-20°), making it one of the most dependable evergreen shrubs for northern gardens.

Plant Care

Water

Water regularly; allow soil to dry down between watering

Fertilizer

Fertilize in the early spring, just as new growth begins to emerge or buds start to swell. A second, lighter application can be made just after the plant has finished flowering in late spring or early summer to support the development of next year's buds. To prevent frost-tender new growth, do not apply fertilizer after mid-July. Choose a fertilizer specifically formulated for acid-loving plants.

Pruning

Light pruning immediately after flowering to maintain its shape.

Seasons of Interest

Shrub is covered in large clusters of red blooms.

Features prominent, colorful flower buds that persist through the winter, providing subtle color, and its dense, rounded habit ensures the landscape maintains its "bones" during the cold months. Year-Round: Its thick, leathery, dark green leaves remain glossy and vibrant in every season. The foliage is resistant to "winter burn" and maintains its color even in extreme temperatures.

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