Hillier™ Porcelain Blue Corydalis
Corydalis flexuosa 'Porcelain Blue'
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Hillier™ Porcelain Blue Corydalis is backordered and will ship as soon as it is back in stock.
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- Prevents restricted plants from shipping to your state
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- 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
Hillier™ Porcelain Blue Corydalis 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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Moisture
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Soil
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Growth RateMedium
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Pollinator Friendly
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Fragrant
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Pruning Time
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Bloom PeriodEarly Spring, Late Spring
Growing Zones 5-9
Delft blue lovelies, the unique trumpet-shaped blossoms of Hillier™ Porcelain Blue Corydalis (Corydalis flexuosa 'Porcelain Blue') are so unique as they dangle elegantly from their tall flower spikes! Like elongated tubes of baby blue loose bottlebrushes of blossoms! Preferring partial shade, you'll enliven shade gardens with lovely true blue color!
Elegantly dangling from bronzed stems and backed by a tuft of bronzy deep blue-green foliage, Hillier™ is a pollinator magnet that naturalizes when allowed, giving you more of a great thing without any effort! The tube-like shape even encourages a few hummingbirds to visit!
Also known as Fumewort, these smaller plants produce a dense clump of foliage and tall, upright flowering stems. Easy care, these tender perennials are highly heat and cold tolerant, blooming all spring and summer without slowing down.
Planting and Application:
Plant Porcelain Blue in shaded perennial and cottage gardens and in cutting borders for blooms to bring indoors too! Pollinator beds and rock gardens, or under the protective limbs of larger trees as facer plants, you'll find a place that needs the finery these sublime plants add to your beds and borders!
Ideal in protected porch and patio planters, the blooms even droop gracefully for spillers and as additions to hanging baskets to delight you with their unique form and color anywhere regardless of space available! If you have the room, let these naturalizing wildflowers self-seed throughout larger swaths for cooling blue-bronze hues in shaded woodland settings.
- Unique Trumpet-Like Baby Blue Blooms
- Bronzy Green Stems & Foliage Accents
- Tidy Blue-Green Clumps of Leaves
- Loves Shady Protected Sites
- Rock Gardens, Planters, Pollinator & Cut Flower Friendly
#ProPlantTips for Care:
Corydalis are very easy-care plants and do best in protected part shade areas, preferring morning sun and afternoon shade or all-day filtered light. Plant in a very well-drained soil from dry to moist, appreciating a 3-4 inch thick layer of Arborist mulch chips. Having moderate, yet regular moisture needs, don't let these go too long during droughts without a drink.
- Part Sun/Shade
- Moderate Yet Regular Moisture & Mulched Beds
- Deadhead to Encourage More Blooms
- Well-Drained Soil
- Tender Perennial USDA Zones 5-9
Lovely color, woodland wildflower beauty and unique form, the Hillier™ Porcelain Blue Corydalis is just the finery your dappled shade gardens need! Order yours today from NatureHills.com!
