Rosebay Rhododendron – Rhododendron maximum Shrub Seeds | 150 Seeds | Hardy Evergreen Woodland Shrub | Showy Shade Blooms

Enhance your woodland or shade garden with Rosebay Rhododendron (Rhododendron maximum), a hardy evergreen shrub native to eastern North America. This large, multi-stemmed shrub is prized for its glossy foliage, impressive flower clusters, and exceptional cold tolerance. Ideal for woodland gardens, shaded borders, and naturalized plantings.

Rosebay Rhododendron typically grows 8–15 feet tall and wide, though mature specimens can become much larger in ideal conditions. It forms a dense, rounded habit and may create thick, natural screens in shaded landscapes. The large, leathery, dark green leaves remain evergreen year-round, adding structure and beauty even in winter.

In late spring to early summer, upright clusters of pale pink to nearly white funnel-shaped flowers bloom, often marked with yellow-green spotting. While lightly fragrant, the blooms are highly ornamental and attract hummingbirds and butterflies. This species thrives in acidic, humus-rich soils and performs best in part shade to high open shade.

Extremely hardy and adaptable to cool climates, Rosebay Rhododendron tolerates temperatures down to approximately -20°F. It is well suited for woodland gardens, foundation plantings, mass plantings, and naturalized shade areas.

You will receive:
✔️ 150 Rosebay Rhododendron seeds
✔️ Botanical name: Rhododendron maximum
✔️ Fresh, untreated seeds
✔️ Labeled seed packet with sowing instructions
✔️ Secure packaging for safe delivery

🌼 Growing Information
Common Name: Rosebay Rhododendron
Botanical Name: Rhododendron maximum
Plant Type: Evergreen flowering shrub
Growth Stage: Seed
Sun Requirements: Part shade to high open shade
Soil: Acidic, humusy, organically rich, well-drained yet moisture retentive
Watering: Medium; keep soil consistently moist but not waterlogged
Mature Height: 8–15 feet (larger in ideal woodland conditions)
Growth Rate: Medium
USDA Zones: 4–6
Container Friendly: Suitable for early growth only

💡 Care Tip:
Surface sow seeds indoors at 55–64°F in acidic potting mix or peat. Do not cover seeds, as they require light to germinate. Use a humidity dome and mist regularly to maintain even moisture. Avoid letting soil dry out, as rhododendrons have shallow, sensitive root systems.