Blue Mirror Delphinium
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Blue Mirror Delphinium - Premium #1 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 |
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$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
Buying Options for Plants
Nature Hills sells a large variety of plants with several options available. Plants are offered in both potted containers and as dormant bare root without soil. Here is a helpful resource to understand your options as you create a beautiful landscape with help from Nature Hills.
Ever wonder what a larger plant will mean for your landscape? Container Sizes are really all about the age of the plant!
Seasonally, Nature Hills offers hand selected, high quality bare root trees, shrubs and perennials. Bare root plants are sold by height from the top of the root system to the top of the plant. Plants may be taller than the height minimums.
- Popular sizes of select trees are 1 foot, 2 feet, 3 feet, etc.
- Popular sizes of select bare root plants is 1 foot, 18 inches, etc.
Nature Hills Container Size by Volume
Keep in mind, specific varieties and different growing conditions can affect the rate at which plants grow. Variations in size may occur.
Young Plants to 18 Months | ||
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Size | Volume | |
2"x2"x3" | Ranges from | .18 to .21 dry quarts / .198 to .23 dry liters in volume |
4.5" Container | Equal to | .65 dry quart / .72 dry liter in volume |
Sprinter Pot | Equal to | .63 dry quart / .69 dry liter in volume |
4" Container | Ranges from | .31 to .87 / .35 to .96 dry liter in volume |
6" Container | Equal to | 1.4 dry quarts / 1.59 dry liters in volume |
1 Quart | Equal to | 1 dry quart / 1.1 dry liter in volume |
5.5" Container | Equal to | 1.89 of a dry quart / 2.08 dry liters in volume |
4"x4"x5" | Ranges from | .8 to 1.1 dry quarts / .88 to 1.2 dry liters in volume |
4"x4"x6" | Ranges from | 1.0 to 1.3 dry quarts / 1.1 to 1.41 dry liters in volume |
4"x4"x9" | Ranges from | 1.1 to 2.1 dry quarts / 1.2 to 2.3 dry liters in volume |
4"x4"x10" | Ranges from | 1.7 to 2.3 dry quart / 1.87 to 2.53 dry liters in volume |
Plants 18 Months - 2.5 Years Old | ||
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Size | Volume | |
2 Quart | Equal to | 2 dry quarts / 2.2 dry liters in volume |
#1 Container | Ranges from | 2.26 to 3.73 dry quarts / 2.49 to 4.11 dry liters in volume |
5"x5"x12" | Equal to | 3.5 to 4.3 dry quarts / 3.85 to 4.74 dry liters in volume |
Plants 2 - 4 Years Old | ||
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Size | Volume | |
#2 Container | Ranges from | 1.19 to 1.76 dry gallons / 5.24 to 7.75 dry liters in volume |
#3 Container | Ranges from | 2.32 to 2.76 dry gallons / 10.22 to 12.16 dry liters in volume |
Plants 3 - 5 Years Old | ||
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Size | Volume | |
#5 Container | Ranges from | 2.92 to 4.62 dry gallons / 12.86 to 20.35 dry liters in volume |
#6 Container | Ranges from | 5.25 to 6.01 dry gallons / 23.12 to 26.42 dry liters in volume |
#7 Container | Ranges from | 5.98 to 6.08 dry gallons / 26.34 to 26.78 dry liters in volume |
Plant Highlights
Blue Mirror Delphinium highlights at a glance!
Plant Highlights
Plant Highlights
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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, Late Spring

Growing Zones
Blue Mirror Delphinium: Compact Bold Blue Color!
Gorgeous blue wands of romantic color, the Blue Mirror Delphinium (Delphinium grandiflorum 'Blue Mirror') is a compact Chinese Delphinium that dazzles with intense cobalt-blue blooms and a long-lasting floral display. Unlike traditional tall Delphiniums, Blue Mirror features a compact, bushy habit, making it perfect for smaller spaces, borders, and containers.
This hardy perennial blooms repeatedly from late spring through summer, offering a reliable burst of color.
Native to China, this species is known for its finely cut foliage mounds and prolific, richly colored blooms, adding a touch of elegance and drama to any garden setting.
>>Jump to Planting & Care Instructions
Key Features of Blue Mirror Delphinium
- Brilliant cobalt-blue flowers with distinctive cup-shaped petals.
- Compact, bushy growth habit, reaching 12-24 inches tall and 12-18 wide
- Blooms from late spring through summer, with repeat flowering.
- Native to China, offering a unique alternative to taller varieties.
- Attracts butterflies and pollinators, enhancing garden biodiversity.
- Deer and rabbit resistant for worry-free planting.
- Hardy in USDA Zones 3-7, thriving in a wide range of climates.
- Low-maintenance and highly adaptable.
How to Use Blue Mirror Delphinium in the Landscape
Compact Cottage Gardens & Perennial Borders
- Plant in mixed borders and Cottage Gardens for a splash of bold blue.
- Combine with Coreopsis, Dianthus, or Shasta Daisies for a beautiful color contrast.
- Use in group plantings for a striking mass of blue flowers.
Pollinator-Friendly Gardens
- Attract butterflies, bees, and other beneficial pollinators with its nectar-rich blooms.
- Include in wildlife-friendly garden designs for season-long interest.
Containers & Patio Displays
- Perfect for small spaces, Blue Mirror thrives in containers and patio gardens.
- Pair with ornamental grasses or trailing annuals for a layered effect.
Rock Gardens & Front-of-Border Plantings
- Compact size makes Blue Mirror an excellent choice for rock gardens or front-of-border plantings.
- Use as a filler plant to soften edges and create a cohesive look.
Cut Flower Gardens
- Guardian Delphinium Mix is a favorite for cut flower arrangements with its long-lasting blooms and sturdy stems.
- Harvest early in the morning for the freshest blooms.
Delphinium Care & Maintenance
These are easy-to-grow perennial plants that are a delight to have in your garden!
Sun & Soil Requirements
- Prefers full sun, though it can tolerate light shade in hotter climates.
- Requires well-drained, moderately fertile soil for optimal growth.
Watering & Mulching
- Keep soil evenly moist, especially during the hottest parts of the growing season.
- Add a 3-4 inch deep layer of mulch around the base to retain moisture and reduce competition from weeds.
Fertilizing
- Feed with a balanced, slow-release fertilizer in early spring to support vigorous growth and flowering.
Deadheading & Pruning
- Deadhead spent blooms to promote continuous flowering.
- Cut back after the first flush to encourage a second round of blooms later in the season.
Winter Care
- Very cold-hardy and easy to grow, Blue Mirror tolerates cold winters well. Apply mulch in late fall to protect the root zone.
Order Blue Mirror Delphinium Today!
Bring stunning cobalt-blue color to your garden with Blue Mirror Delphinium, a compact and versatile Chinese Delphinium. Its long bloom season, low-maintenance nature, and pollinator-friendly appeal make it a must-have for any garden enthusiast.
Order now from Nature Hills Online Plant Nursery, and enjoy months of brilliant blue blooms in your landscape!
Frequently Asked Questions About Blue Mirror Delphinium
How tall does Blue Mirror Delphinium grow?
Blue Mirror grows to 12-24 inches tall and the foliage mounds spread 12-18 inches wide, making it perfect for small-space gardens.
When does Blue Mirror Delphinium bloom?
It blooms from late spring through summer, with repeat flowering after deadheading.
Is Blue Mirror Delphinium deer-resistant?
Yes! Blue Mirror is deer and rabbit-resistant, making it a great choice for areas with wildlife pressure.
Can Blue Mirror be grown in containers?
Absolutely! Its compact size and bushy habit make it an ideal choice for patio pots and container gardens.
Does Blue Mirror Delphinium rebloom?
Deadhead spent flowers regularly and cut back after the first bloom to encourage a second flush later in the season.
Why Order From Nature Hills Nursery?
Nature Hills Nursery is committed to bringing the highest-quality plants to your door. Join thousands of happy customers and get all your planting needs at Nature Hills! We guarantee our plants for their first year! Check out lifelong support and landscaping ideas in our #ProPlantTips Garden Blog and online at customer-support.naturehills.com!