Lavender-purple spring trusses and bold evergreen leaves, a classic shade shrub that brings rich color and year-round structure
FEATURES:
- Lavender to purple flower trusses that create a showy spring display in shade
- Broadleaf evergreen foliage for year-round structure and deep green mass
- Full, classic rhododendron habit that makes beds look lush and established
- Perfect for woodland edges and foundation plantings where it can brighten darker areas
- Cold-hardy and dependable for long-term performance in cooler climates
- Ideal in groups for screening, layering, and a rich evergreen backdrop
- Hand Selected; Fresh from the Grower
- Ships on our trucks because the size of the tree - does not fit in a box.
Bower & Branch Landscape Design Tip:
Purple blooms love a calm base. Let the flowers be the headline by surrounding them with strong greens and simple textures, ferns, sedges, glossy groundcovers. Then add one bright accent nearby (white blooms or silver foliage) and the purple looks even richer without the bed feeling busy.
Growth Facts
- Hardiness Zone: 4-8
- Mature Height: 6-8' tall
- Mature Width: 6-8' wide
- Exposure: Part Shade/Shade
- Spacing: 6-8' tall
Grandiflorum Rhododendron
Bower & Branch Trees and Plants
Rhododendron catawbiense 'Grandiflorum'
Regular price
Plant with Confidence when choosing Big & Tall Trees and Hedges!
Lavender-purple spring trusses and bold evergreen leaves, a classic shade shrub that brings rich color and year-round structure
FEATURES:
- Lavender to purple flower trusses that create a showy spring display in shade
- Broadleaf evergreen foliage for year-round structure and deep green mass
- Full, classic rhododendron habit that makes beds look lush and established
- Perfect for woodland edges and foundation plantings where it can brighten darker areas
- Cold-hardy and dependable for long-term performance in cooler climates
- Ideal in groups for screening, layering, and a rich evergreen backdrop
- Hand Selected; Fresh from the Grower
- Ships on our trucks because the size of the tree - does not fit in a box.
Bower & Branch Landscape Design Tip:
Purple blooms love a calm base. Let the flowers be the headline by surrounding them with strong greens and simple textures, ferns, sedges, glossy groundcovers. Then add one bright accent nearby (white blooms or silver foliage) and the purple looks even richer without the bed feeling busy.
Growth Facts
- Hardiness Zone: 4-8
- Mature Height: 6-8' tall
- Mature Width: 6-8' wide
- Exposure: Part Shade/Shade
- Spacing: 6-8' tall
Why plant Grandiflorum Rhododendron?
Grandiflorum is the rhododendron that understands the assignment: bring color to shade and keep the garden looking full year-round. In spring, it blooms in generous lavender to purple trusses, adding that rich, romantic color that makes woodland plantings feel intentional instead of just “green.” After bloom, the shrub holds strong with bold evergreen leaves, giving the landscape structure through summer and real presence through winter.
It’s a classic for a reason. It’s reliable, substantial, and easy to design with, offering that perfect combination of spring drama and evergreen backbone. If you want a shade shrub that feels lush, timeless, and genuinely impactful, this one is a cornerstone.
How to use Grandiflorum Rhododendron in the landscape?
Use it in shaded foundation beds to bring spring color and evergreen mass where landscapes often feel flat or sparse. Along woodland borders, plant it behind hostas, ferns, and groundcovers so the rhododendron becomes a deep green backdrop with a pop of purple bloom overhead in spring. In groups, it works beautifully as a soft screen near patios or along property edges, creating a layered, garden-like enclosure. Pair it with white-flowering companions for contrast, or echo the purple tones with perennials and spring bulbs to create a cohesive, color-forward shade design.
Frequently Asked Questions
The blooms are lavender to purple, forming large trusses in spring for a rich, showy display.
It prefers acidic, well-drained soil with consistent moisture. Rhododendrons have shallow roots, so mulch helps keep roots cool and evenly moist, just keep mulch a few inches away from the stems. Avoid soggy soil, but don’t let it dry out during hot spells.
Deadheading spent flower trusses after bloom is optional but helps keep the plant tidy. If shaping is needed, prune lightly right after flowering. Avoid heavy pruning late in the season, since buds for next year develop on new growth.
