Holden’s™ Red Rhododendron
Rhododendron ‘HoldenRhodo221’ PP 35,416
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Holden’s™ Red Rhododendron - #3 Container is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Delivery and Shipping
Fast, Safe Plant Delivery
Ships in 3-4 business days • Tracking provided • Weather protected
| Under $50 | $9.99 |
| $50 - $99.99 | $14.99 |
| $100 - $149.99 | $16.99 |
| $150+ | $24.99 |
✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee
Understanding Plant Options
Nature Hills offers plants in two main formats:
- Container Plants: Grown in pots with soil, sized by container volume and plant age
- Bare Root Plants: Dormant plants without soil, sized by height measurements
Container Plant Sizes
Container sizes indicate plant age and growing capacity rather than liquid volume equivalents. Our containers follow industry-standard nursery "trade gallon" specifications, which differ from standard liquid gallon measurements.
Young Plants (6 months to 18 months old)
| Container Size | Actual Volume | Metric Equivalent |
|---|---|---|
| 2" x 2" x 3" | 0.18 - 0.21 dry quarts | 0.20 - 0.23 dry liters |
| 4" Container | 0.31 - 0.87 dry quarts | 0.35 - 0.96 dry liters |
| 4.5" Container | 0.65 dry quarts | 0.72 dry liters |
| 6" Container | 1.4 dry quarts | 1.59 dry liters |
| 1 Quart | 1 dry quart | 1.1 dry liters |
| 5.5" Container | 1.89 dry quarts | 2.08 dry liters |
Established Plants (18 months to 2.5 years old)
| Container Size | Actual Volume | Metric Equivalent |
|---|---|---|
| 2 Quart | 2 dry quarts | 2.2 dry liters |
| #1 Container | 2.26 - 3.73 dry quarts | 2.49 - 4.11 dry liters |
| 5" x 5" x 12" | 3.5 - 4.3 dry quarts | 3.85 - 4.74 dry liters |
Mature Plants (2-4 years old)
| Container Size | Actual Volume | Metric Equivalent |
|---|---|---|
| #2 Container | 1.19 - 1.76 dry gallons | 5.24 - 7.75 dry liters |
| #3 Container | 2.15 - 2.76 dry gallons | 8.14 - 12.16 dry liters |
Large Plants (3-5 years old)
| Container Size | Actual Volume | Metric Equivalent |
|---|---|---|
| #5 Container | 2.92 - 4.62 dry gallons | 12.86 - 20.35 dry liters |
| #6 Container | 5.25 - 6.01 dry gallons | 23.12 - 26.42 dry liters |
| #7 Container | 5.98 - 6.53 dry gallons | 26.34 - 28.76 dry liters |
Bare Root Plants
Bare root plants are sold by height from the root system to the top of the plant. Plants may exceed minimum height requirements.
Common Sizes:
- Trees: 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet
- Shrubs & Perennials: 1 foot, 18 inches, 2 feet
Important Notes
Container Volume Specifications
- Trade Gallon Standard: Our containers follow industry-standard "trade gallon" specifications established by the American National Standards Institute (ANSI Z60.1) for nursery stock
- Volume Variations: Actual soil volume may vary due to plant root systems and growing medium settlement
- Age Indicators: Container size primarily indicates plant age and maturity rather than liquid volume equivalents
Growing Conditions
- Plant size can vary based on variety and growing conditions
- Container size helps indicate plant maturity and establishment level
- Larger containers generally mean more established root systems and faster landscape establishment
Seasonal Availability
- Bare root plants are available seasonally when dormant
- Container plants are available throughout the growing season
- Specific varieties may have limited availability in certain sizes
Questions?
For questions about specific plant sizes or availability, please contact our plant experts who can help you choose the right size for your landscape needs.
Plant Highlights
Holden’s™ Red Rhododendron highlights at a glance!
Specifications
Specifications
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Brand
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Botanical Name
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Growing Zones
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Mature Height
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Mature Spread
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Sun ExposurePartial Shade
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Moisture
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Soil
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Growth RateFast
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Flower Color
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Pollinator Friendly
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Pruning Time
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Bloom PeriodEarly Spring, Late Spring
Growing Zones
Looking for a fiery spring showstopper? Holden's™ Red Rhododendron PP#35,416 (Rhododendron 'HoldenRhodo221') sets the garden ablaze with trusses of deep, ruby-red blooms in mid to late spring. This broad-leaved evergreen shrub dazzles with its glowing flowers, making it a true garden star! The blooms are rounded trusses packed with vibrant color, giving an unforgettable display right when spring gardens need their brightest moment.
This modern hybrid shows off with glossy, leathery foliage that keeps its handsome green color year-round. Dense and mounding in habit, Holden's™ Red forms a broad, spreading shape that matures to about 4-5 feet tall and 6-8 feet wide, perfect for hedges or specimen plantings. Its sturdy evergreen structure means your landscape keeps good bones even in the winter months.
>>Jump to Planting & Care Instructions
Key Features
Rhododendrons have a history of symbolizing elegance and natural beauty, making Holden's™ Red a cultural and horticultural treasure.
- Bold ruby-red flower clusters in spring
- Broadleaf evergreen shrub with glossy green foliage
- Compact, broad, mounded form
- Reaches 4-5 feet tall and 6-8 feet wide
- Unique hybrid introduction
Landscaping Uses
Holden's™ Red Rhododendron is a showpiece shrub that shines in mixed shrub borders, woodland gardens, and foundation plantings. Its evergreen foliage and big spring blooms make it versatile and impactful.
- Perfect as a flowering hedge or privacy screen
- Bold specimen shrub in the front yard
- Adds structure to foundation plantings
- Great companion for Azaleas, Ferns, and Hostas
- Ideal in woodland or shade gardens
Care & Maintenance
Holden's™ Red Rhododendron thrives in USDA growing zones 5-8. This broad-leaved evergreen keeps its foliage all year, providing lasting beauty. It prefers consistent moisture, acidic soil, and partial shade for best health and bloom performance. Learn more in our guide to Rhododendron care and pruning.
- Planting Time: Best in spring or fall
- Sun Requirements: Part shade to filtered sun (morning sun, afternoon shade)
- Soil Requirements: Acidic, rich, organic, well-drained soil - does not tolerate alkaline or compacted soils
- Moisture Needs: Keep soil evenly moist - use the Finger Test. New shrubs need consistent water during their first year
- Mulch: Always apply a 3-4 inch deep layer of Arborist Mulch to regulate temperature and conserve moisture
- Fertilization Needs: Use a fertilizer for acid-loving plants in spring after flowering; compost works well too
- Pruning Info: Minimal pruning needed - prune right after bloom if shaping is necessary. Avoid cutting late, as it forms buds on old wood.
- Special Perks: Deer-resistant, low-maintenance once established, excellent cold and heat tolerance for its range
- Provide winter watering for broadleaf evergreens to prevent winter burn. Read how and why here!
Don't forget to order your Nature Hills Root Booster for lifelong mycorrhizal symbiotic root support
Red Hot Beauty You'll Adore!
Gorgeous Holden's™ Red Rhododendron brings sizzling spring color with year-round structure that's impossible to ignore. Its bold blooms and evergreen form will anchor your garden in all seasons. Order your Holden's™ Red today from Nature Hills, and start enjoying unforgettable color right at your doorstep!
