Powis Castle Wormwood
Artemisia x 'Powis Castle'
- Stay Protected with Plant Sentry ™
Powis Castle Wormwood - #2 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 |
|---|---|---|
| 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
Powis Castle Wormwood 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
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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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Fragrant
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Pruning Time
Growing Zones
Aromatic & Lacy Powis Castle Wormwood Shrub
Meet the queen of silver foliage! The Powis Castle Wormwood (Artemisia x 'Powis Castle') is a shimmering, fragrant shrub with a cloud-like texture and soft, silvery, ferny leaves. Though rarely flowering, the finely-textured, aromatic foliage is its showstopper main feature—aromatic and lacy, almost feathery, like a puff of silver mist in the garden!
This semi-woody subshrub forms a wide, billowy mound, topping out around 2–3 feet tall and up to 3-6 feet wide, with soft stems cloaked in deeply cut, silvery-gray leaves. It rarely blooms, but when it does, expect small, yellow, inconspicuous flowers in late summer—though many gardeners shear them off to keep the foliage tidy and robust. In the fall, its foliage persists well, especially in warmer zones, where it remains evergreen to semi-evergreen!
Back in the Victorian era, Wormwood symbolized sorrow or remembrance, but in modern gardens, it's the epitome of resilience and beauty!
Key Features
- Silvery, aromatic, fern-like foliage
- Drought and deer tolerant
- Rarely flowers, prized for foliage
- Semi-evergreen in mild climates
- Compact, wide-spreading mound
- Heat and salt tolerant
- Hybrid origin: A. arborescens × A. absinthium
Landscaping Uses
Powis Castle Wormwood hails from a cross between Artemisia arborescens and Artemisia absinthium, giving it both Mediterranean toughness and classic Wormwood charm. It's resistant to deer, drought, and even salty sea air. If you are looking to fill a dry slope, this silvery shrub shines!
This hybrid Artemisia is treasured for its drought tolerance, pest resistance, and low-maintenance personality, making it a top choice for xeriscaping, deer-prone areas, and adding year-round contrast to perennial borders.
This soft-textured, 2–3 foot tall and 3-6 foot wide mound of shimmer is ideal for sunny borders, dry gardens, and Mediterranean-style designs.
- Accent plant for borders, mixed perennial gardens, and Cottage Gardens
- Filler in Rock Gardens or as erosion control on dry slopes
- Silvery contrast to bright flowering perennials
- Xeriscapes and gravel gardens
- Containers (as long as they have excellent drainage)
- Along pathways for aromatic brushing
Care and Maintenance
This plant is hardy in zones 6 to 9, with a particular fondness for hot, dry climates and well-drained soil. This semi-woody subshrub is low-maintenance, drought-tolerant, and thrives on neglect—but in the best way possible!
- Planting Time: Spring or fall
- Sun Needs: Full sun is best (6+ hours of direct sun per day)
- Soil Needs: Requires well-drained soil; handles clay if amended; tolerates rocky and sandy soils
- Moisture Needs: Very drought tolerant once established; do not overwater
- Mulch: Apply a 3–4 inch deep layer of bark mulch to retain moisture and insulate roots; compost is beneficial at planting time
- Fertilization Needs: Rarely needs fertilizer; avoid high-nitrogen blends
- Pruning Info: Prune in early spring to encourage fresh growth; shear in mid-summer if it becomes leggy
- Renewal Pruning: Every 2–3 years, cut back hard in spring to rejuvenate
- Special Needs/Perks:
- Deer and rabbit-resistant, pest and disease-resistant
- Handles salty air
- Thrives in poor soil
- Heat and drought tolerant
- Dislikes wet feet
A Castle-Worthy Silver Lining
Powis Castle Wormwood is a regal choice for gardeners who love shimmer without the fuss! Let this silvery shrub rule over your sunny garden beds with grace, fragrance, and textural charm.
Buy now and Nature Hills will ship at the proper planting time for your zone, ensuring your new garden treasure arrives ready to thrive.
Frequently Asked Questions
Is Powis Castle Wormwood invasive?
No, it's a sterile hybrid and does not self-seed or spread aggressively.
Is Powis Castle Wormwood evergreen?
It is semi-evergreen in zones 7–9 and may die back in colder zone 6, but it returns each spring!
Does Powis Castle Wormwood bloom?
It rarely blooms; small yellow flowers may appear in late summer, but they are often removed to maintain foliage quality.
Can Powis Castle Wormwood be grown in containers?
Yes, as long as they have excellent drainage—perfect for raised planters or terracotta pots.
How big does Powis Castle Wormwood get?
It reaches 2–3 feet tall and spreads up to 6 feet wide.
Why is it called Powis Castle?
It was discovered in the gardens of Powis Castle in Wales and has since become a garden classic!
