Diamonds Blue Dwarf Delphinium
Delphinium grandiflorum 'Diamonds Blue'
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Diamonds Blue Dwarf Delphinium 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
Diamonds Blue Dwarf Delphinium 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 ExposureFull Sun
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Moisture
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Soil
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Growth RateMedium
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Fall Color
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Pollinator Friendly
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Fragrant
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Pruning Time
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Bloom PeriodSummer, Fall
Growing Zones 3-9
Big bold blooms that stand vertical in the garden, the Diamonds Blue Dwarf Delphinium (Delphinium grandiflorum 'Diamonds Blue') shoots up flouncy spikes of electrified lavender to lavender-blue blooms, each with a lovely pinkish-purple dot kissing each petal! These are lovely landing pads for butterflies and big focal points in the garden border and in the vase!
These perennial flowering plants form lovely mounds of heavily lobed, deep green leaves that are perfectly sized for tucking into any garden bed or border, or even containers for a dramatic blue vertical accent! The entire flower spike is covered in these single electrically hued blooms and is sure standouts for the landscape without sacrificing space.
Dwarf Delphinium is a hardy and cold-tolerant perennial that thrives throughout USDA growing zones 3 through 9. Usually, Delphinium grows to great heights, but Diamonds Blue is just a miniature version of the classic border plant! Growing to 18-24 inches in height when in bloom and spreading to 12-15 inches in width.
Planting and Application:
Classic Cottage garden and Perennial border plants, Delphinium thrive in hot dry locations and the blooms last for a long time as they open from the bottom up on each spike! Add to cut flower gardens for vivid bouquet additions, and add the waving blue wands to pollinator gardens for low height and interest! Plant with other Delphinium varieties for a gorgeous show every summer!
Diamonds Blue can easily add height and interest to patio pots, porch containers and big mixed planters of your seating areas in the sun! Pair with flowing grasses and groundcovers, include in Rose gardens and add interest to a Rock Garden with upright unearthly blue color! Create groupings among other landscape plants to add dramatic points of interest anywhere in the sun!
- Frilly Lavender-Blue Petals With Purple Spots
- Lobed Deep Green Foliage
- Low-Maintenance Space-Saving Size
- Pollinators, Cut Flowers & Containers
- Accents, Low Focal Points, Rock gardens & Cottage borders
#ProPlantTips for Care:
Dwarf Delphinium are blissfully low-maintenance. These modern perennials boast strong stiff stems that rarely require staking if planted in a sheltered spot. Plant in the full sun for the strongest growth and in well-drained organically enriched soils. Provide regular yet moderate moisture throughout the growing season and add a 3-4 inch layer of mulch over the root zone for moisture retention and insulation. Encourage reblooming by trimming down the flowers as they near finishing. You'll enjoy another excellent display in late summer and fall if those first flowers are removed. In late fall, prune back the mound and water in well for the winter.
- Full Sun
- Moderate Yet Regular Moisture
- Deadhead After Bloom & Prune in Late Fall
- Appreciates Well-Drained Enriched Soil
- Deer Resistant
Diamonds Blue Dwarf Delphinium is just the brilliant perennial for your garden bed or border that is sure to catch all the attention! No fuss and no muss classic garden beauty can be yours as soon as you order yours at NatureHills.com today!
