Guardian Mix Larkspur
Delphinium elatum ‘Guardian Mix’
- Stay Protected with Plant Sentry â„¢
Guardian Mix Larkspur is backordered and will ship as soon as it is back in stock.
Plant Sentryâ„¢
Plant Sentryâ„¢

Plant Sentryâ„¢ Protected
Your order is protected by our compliance system that:
- Prevents restricted plants from shipping to your state
- Ensures plants meet your state's agricultural requirements
- Protects gardens from invasive pests and diseases
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
Guardian Mix Larkspur highlights at a glance!
Specifications
Specifications
-
Brand
-
Botanical Name
-
Growing Zones
-
Mature Height
-
Mature Spread
-
Sun ExposureFull Sun
-
Moisture
-
Soil
-
Growth RateMedium
-
Flower Color
-
Pollinator Friendly
-
Pruning Time
-
Bloom PeriodSummer

Growing Zones
Colorful cottage garden charm, the Guardian Mix Larkspur (Delphinium x 'Guardian Mix') is a beloved tall garden performer packed with rich, saturated color. Featuring tight spires of semi-double to fully double florets in variable but vivid shades of white, lavender, sky blue, true blue, and deep violet-purple, this early-blooming perennial brings vertical drama to perennial borders!
Lightly fragrant, pollinator-attracting, and reblooming with deadheading, Guardian Mix is a hybrid strain prized for its uniform bloom time, cold-hardiness, and heat tolerance. It's an upright, non-floppy cultivar that blooms in early summer and can rebloom into late summer with proper care.
Guardian Mix has a tidy, columnar, vertical growth habit with hollow yet sturdy green stems, deeply cut palmate green leaves, and robust roots that form a strong crown. Each flower spike holds tightly packed blooms with a central 'bee' (the contrasting petal center) that adds extra charm.
>>Jump to Planting & Care Instructions
Key Features
- Hybrid Delphinium with early bloom and strong stems
- Mixed colors: white, lavender, blue, purple
- Reblooming with deadheading
- Fragrant flowers attract bees and butterflies
- Upright, non-floppy habit and excellent as cut flowers
- Grows 3-4 feet tall and 1-1.5 feet wide
Landscaping Uses
Use Guardian Mix Larkspur to bring height, color, and classic elegance to your landscape. Its vertical shape and bold blooms anchor mixed borders and flower beds beautifully. Native to Europe and Asia, Larkspurs have been cultivated since ancient times and symbolize lightness, levity, and an open heart. The Guardian Series was bred for uniform performance and early blooming, ideal for commercial cut flower growers and home gardeners alike!
- Cottage Garden focal point
- Cut flower gardens for bouquets
- Mixed perennial borders
- Back of the Border garden specimens
- Vertical interest in large containers as Thrillers
A variety of Delphinium, it produces multiple stalks from the base and grows about 3-4 feet tall and 1-1.5 feet wide, ideal for the middle to back of the border. Its green foliage holds shape well through summer, and the flowering stems make excellent cut flowers.
Care & Maintenance
Guardian Mix Larkspur is an herbaceous perennial that prefers cool summers, rich soil, and consistent moisture. It performs best with support and regular maintenance to prolong blooming. This cool-season perennial thrives in USDA growing zones 3-7 and prefers cooler summers. Ideal in northern regions and elevated areas where summers stay mild. It may go dormant during hot summers and heatwaves.
- Planting Time: Spring or fall in cooler regions
- Sun Requirements: Full sun to part sun; afternoon shade in hot areas
- Soil Requirements: Moist, well-drained, humus-rich soil; dislikes heavy clay or overly sandy soils
- Moisture Needs: Moderate moisture; use the Finger Test to check for watering needs
- Arborist Mulch: Apply a 3-4 inch layer of arborist mulch to regulate soil temperature and retain moisture
- Fertilization Needs: Fertilize in early spring with balanced fertilizer or compost; repeat after first bloom for reblooming
- Pruning Info: Deadhead faded blooms promptly to encourage a second flush; cut back stems after final bloom in fall
- Division Info: Divide every 3-4 years in early spring if needed
- Special Perks/Growing Tips:
- Deer-resistant
- Strong stems
- Bred for uniform growth
A Towering Tale of Color & Grace!
The Guardian Mix Larkspur lives up to its name by guarding your garden's beauty with upright spires of spectacular blooms. Easy to love and stunning in bloom, this hybrid Delphinium delivers a wonderful range of colors and adds cool-season charm, fragrance, and pollinator support in a classic, vertical form.
Buy now, and Nature Hills will ship at the appropriate planting time for your growing zone.