Rhododendron 'Catawbiense Grandiflorum’

Rhododendron 'Catawbiense Grandiflorum': Lavender Trusses with a Golden Throat Glow

Rhododendron 'Catawbiense Grandiflorum' is a classic, broadleaf evergreen that brightens part-shade gardens with generous trusses of lavender blooms highlighted by a soft yellow blotch. Flowering in late spring, it brings that unmistakable rhododendron presence, full, rounded flower clusters held above rich, shiny foliage. The dark green leaves stay handsome year-round, giving the garden structure and depth long after the bloom finishes. With a fast growth rate and a compact, balanced shape, it’s a reliable way to build evergreen backbone with a beautiful spring payoff.

Plant Characteristics:

• Height: 3–4’
• Spread: 3–4’
• Flower Colour: Lavender with a yellow blotch
• Flowering Period: Late spring
• Foliage: Shiny dark green, evergreen
• Sunlight Requirements: Part Shade
• Soil Requirements: Moist, well-drained, acidic soil rich in organic matter

Uses and Benefits: A strong choice for woodland borders, shaded foundation plantings, and mixed evergreen groupings where you want spring colour without sacrificing year-round structure. The lavender flowers lift darker corners, while the glossy foliage provides a polished backdrop for shade perennials and spring bulbs. Use it as a mid-border anchor, or plant in small groups for a fuller, more immersive bloom display.

Care Instructions: Plant in moist, well-drained, acidic soil and mulch to keep roots cool and moisture consistent. Water regularly during establishment and during dry spells, especially through summer heat. Prune only lightly right after flowering, removing spent trusses and any winter-damaged growth, and avoid heavy pruning that can reduce next year’s bloom. Shelter from harsh winter wind where possible to help foliage and buds stay in top form.

History: This selection comes from the hardy Catawba rhododendron group, valued for dependable garden performance and strong evergreen foliage. 'Catawbiense Grandiflorum' is cherished for its classic lavender trusses with a warm yellow blotch, paired with glossy leaves and a compact, vigorous habit that fits easily into residential landscapes.

Final Thoughts: For a tidy evergreen shrub that brings real spring colour and stays handsome all year, Rhododendron 'Catawbiense Grandiflorum' offers timeless beauty with a confident, garden-ready form.