Ambassador Allium
Allium 'Ambassador'
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Ambassador Allium is backordered and will ship as soon as it is back in stock.
Plant Sentry™
Plant Sentry™

Plant Sentry™ 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
Ambassador Allium highlights at a glance!
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Brand
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Botanical Name
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Growing Zones4, 5, 6, 7, 8
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Mature Height
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Spacing
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Sun ExposureFull Sun
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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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Pruning Time
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Bloom PeriodLate Spring

Growing Zones
So round! So firm! So fully packed! The gorgeous purple Ambassador Allium (Allium 'Ambassador') is here to make a statement in your spring landscape! Standing up and standing out, Ambassador will become the prime representative for your bees and butterflies and the occasional early-arriving hummingbird!
Roll out the stately welcome the late spring to early summer flowers with these perfectly round, heavily saturated clusters of starry blooms! Standing tall - nearly 3-4 feet tall - the sturdy stems hold the tightly packed florets aloft for everyone's enjoyment! Backed by an upright clump of grassy, hollow foliage that tips its hat to the Alliums onion family relations. While the leaves do carry the oniony scent, the blooms don't!
Gradually spreading into larger and larger clumps from year to year, these perennial flowering bulbs create small colonies of incredible blooms! Cold-hardy throughout USDA growing zones 4 to 8, Ambassador is fast growing and has very few pests or disease issues! In fact, Allium are incredibly low-maintenance high-profile accents!
Planting and Application:
Ambassador Alliums blooms add color for several weeks and are perfect punctuation marks for the landscape! For formal plantings, Alliums are amenable to more structured and with architectural stature. Plant evenly distributed clumps in front of a backdrop of evergreens or in rows along your paths and walkways! Ambassador adds a reserved, yet showy and ceremonial focal point as a back border or as an accent for architectural interest.
Once the blooms fade, its spunky seedhead remains. Create a fun garden by spray painting these seed heads in colorful paint to create unique garden 'art'! Plus Ambassador Allium is an absolute must for Rock gardens, Cottage gardens, or gardens where children play and learn. Make a statement by lining the path to your door with Alliums, your guests will feel like they entered a fantasy land! Allium are of course one-of-a-kind floral bouquet specimens! They also make a perfect purple focal point when planted as a middle border or in a cottage garden!
Create incredible container gardens with these vertical thrillers, even a window box or planter will become fanciful with these additions! Any sunny patio planter, balcony, or terrace garden becomes something magical!
- Large Perfectly Round Purple Blooms - Packed With Florets
- Hollow Stems & Upright Green Foliage
- Bee & Butterfly Friendly & Nectar Rich Resource
- Outstanding Cut Flower Arrangement Accents
- Bold Architectural Specimens, Back of the Border, Formal & Funky
#ProPlantTips for Care:
These showy and fun Alliums reach their full potential in full sun and fast-draining soil. Fall-planted bulbs need well-drained soil with moderate moisture needs. Any soil type is suitable so long as it is not soggy and add bulb fertilizer to each hole for best results. Their blooms last for weeks and they naturalize and spread over time unless you deadhead after the flowers fade. Deadhead after flowers fade, but let the leaves remain so they can make food for the bulb and next year's flowers! Once the foliage yellows in the summer or fall, you can then prune it to the ground.
- Full Sun For Strongest Growth
- Well-Drained Soil
- Moderate Moisture Needs
- Deadhead After Flowers Fade & Prune Mounds After Leaves Yellow
- Deer Seldom Bother Them
Ambassador Allium is here to promote your garden and make it stand out among the others on the block! Hurry and order these large, high-quality bulbs from Nature Hills today and we'll ship them to your doorstep at the proper fall-planting time in your growing zone!