Summer Stars Delphinium
Delphinium grandiflorum 'Summer Stars'
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Summer Stars Delphinium - 5 Inch Container is backordered and will ship as soon as it is back in stock.
Plant Sentry™
Plant Sentry™
Plant Sentry is designed to protect both consumers and the nursery trade from invasive plant pests and diseases. Sites that display the Plant Sentry protection badge are protected from consumers buying and nurseries shipping material carrying invasive pests and diseases.
This proprietary eCommerce software prevents the shipment of a restricted plant to each state. The Plant Sentry system includes a shipment certification program. The Plant Sentry Compliance Officer works closely with NatureHills.com and each nursery or fulfillment center to ensure only compliant plants are sold to customers.
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Delivery and Shipping
Delivery and Shipping
Shipping
To obtain a more accurate shipment time-frame, simply enter your zip code in the “Find Your Growing Zone” box to the right. Our plants are grown all over the country and lead time on items may be different because of this. Once your order is placed, you will also receive the specific shipment time-frame information as part of your order confirmation. Once an item ships, you will receive shipment notification and tracking numbers, so you can follow along while your plant travels to your doorstep. We use FedEx, UPS, or USPS at our discretion.
Due to winter weather we have put a hold on shipping to the areas shown below in grey. You can still order now and we will ship the plant to you during an appropriate time for your zone.
Standard Shipping Rates
At Nature Hills we handle, package and ship the products you order with the utmost care to ensure healthy delivery. Shipping and handling charges are calculated based on the tables below. Please note that some items include an additional handling surcharge, these will be noted on the item's product page.
From | To | S&H |
---|---|---|
$0 | $19.99 | $24.99 |
$20 | $49.99 | $29.99 |
$50 | $69.99 | $34.99 |
$70 | $99.99 | $39.99 |
$100 | $129.99 | $44.99 |
$130 | $149.99 | $48.99 |
$150 | $150+ | Approx 28% |
Click here to see our full rates
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 |
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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 |
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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
Summer Stars 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, Partial Shade
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Moisture
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Soil
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Growth RateMedium
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Flower Color
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Pollinator Friendly
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Pruning Time
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Bloom PeriodSummer

Growing Zones 3-9
Compact brilliant white stars all summer long, the Summer Stars Delphinium (Delphinium grandiflorum 'Summer Stars') is graced with the most elegant and airy star-shaped flowers nearly all summer long! Each floret is brilliant white and accented with dark black stamen in the centers, floating all along upright wands!
There are about 300 species of this flowering plant in the family Ranunculaceae, and sometimes referred to as Larkspur, Delphinium gets its name from the Latin for 'dolphin'. Like its cousins, Summer Nights and Summer Mornings Delphinium, Summer Stars has lush, finely-dissected foliage that remains compact and deep green all growing season! Lovely even when not in bloom! This refers to the nectary, which resembles a dolphin.
Summer Stars has better heat tolerance and is earlier blooming than other Delphiniums. But it displays the same deer and cold tolerance as the rest of this illustrious family! Small and space-saving, Summer Stars shines in USDA growing zones 3 through 9 with ease!
Planting and Application:
Some companion plants that provide season-long color with Delphiniums are Coneflowers, Dahlias, Daylilies, or Ornamental grasses and they are traditional Cutting Garden and Cottage Border plants! Any garden becomes a Butterfly garden because pollinators, hummingbirds, and admirers will flock to these lovely spires of white flowers! Plant in groupings or rows to maximize this pristine color and provide the max draw for the bees and butterflies!
Like others in this Series, Summer Stars pairs beautifully with the light blue Summer Blues Delphinium and works as edging and front-of-the-border facer plants! The mounds of green foliage look gorgeous all year round and are the perfect backdrop for these wands and for other perennials! Add lacy finery to Rose gardens, perennial borders, and Rock Gardens alike!
Dwarf Delphiniums are lovely gift plants and ideal for tucking into small yards, container gardens, or those bare spots within an established landscape with ease! Perfect focal point flowers in mixed planters so dress up a patio or front porch planter with elegant finery! The fine textured foliage becomes soothing greenery and fillers, even when the plant is not in flower!
- Pure White Spires of Double Star-Shaped Florets
- Dwarf Mounds of Deep-Green Heavily Incised Foliage
- Hummingbirds, Bees & Pollinators!
- Traditional Border & Cut Flower Perennial
- Containers & Planters, Specimen, Edging & Accents
#ProPlantTips for Care:
Dwarf Delphiniums grow best in full sun and love a touch of afternoon shade, in locations with enriched, well-drained soil with a basic pH. If your soil is naturally acidic, adding lime will help to provide these conditions. Delphinium appreciates a 3-4 inch thick layer of mulch over the roots. Provide regular moisture all summer for best results and to support the huge blooms.
These dwarf-sized stems rarely need any staking when planted in a protected area, so they remain upright no problem! But if you do grow them in windy locations, a firm stake will help support their stems. Deadhead early enough and you'll enjoy a rebloom until fall, then as the foliage turns yellow, prune back the leaves and stems close to the ground and water it in well one last time before the ground freezes.
Delphiniums are also heavy feeders. The addition of compost or manure to the soil, as well as a granular fertilizer, will result in healthier, stronger plants. It is recommended you wear gloves when handling these plants since some can develop skin sensitivity. Always monitor young pets and young children around Delphinium.
- Full Sun & Afternoon Shade
- Well-Drained Enriched Soil
- Appreciates Mulch & Regular Moisture Access
- Low-Maintenance & Deer Resistant
- Deadhead As Blooms Fade & Prune Late Autumn
Your garden needs some shining Summer Stars Delphinium this year for elegant and fine-textured beauty! Hurry and order these pure white blooms for yourself or someone special today at NatureHills.com!