Herbstonne Black-Eyed Susan
Rudbeckia 'Herbstonne'
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Herbstonne Black-Eyed Susan - #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
Herbstonne Black-Eyed Susan 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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Pollinator Friendly
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Pollinator Required
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Pruning Time
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Bloom PeriodSummer
Growing Zones 3-9
The Herbstonne Black-Eyed Susan (Rudbeckia 'Herbstonne') is a summer-blooming perennial with a unique green cone that is surrounded by yellow petals! This giant Black-Eyed Susan is the tallest of the Rudbeckia and will grow to impressive heights!
It does not need staking and holds its blooms upon sturdy stems for pollinators to light upon and stand tall in your wildflower bouquets! The 2-3 inch wide, showy, golden-yellow Daisy-like blooms show off from summer until frost!
Cold and heat tolerant, xeric plants grow throughout USDA growing zones 3 to 9, these towering yellow blooms can reach 6 feet high and spread rapidly to cover large areas 2-3 feet wide. In fall, leave the dried perennial blooms standing, so songbirds can enjoy the seeds in the raised cones. The dried blooms catch and sculpt light snowfall for welcome winter interest.
Planting and Application:
This hardy perennial is excellent in borders or naturalized gardens! Herbstonne will be a real eye-catcher! Plant in the back of the border with Buddleias, Joe Pye Weed, and Ornamental Grasses. Blending into wildflower and prairie plantings, Cottage Gardens and is tough enough for Rock Gardens.
Rudbeckia attracts butterflies, especially Monarchs! Feeding pollinators in the crucial late-season months while they prepare for migration and hibernation. They also provide food for birds in the winter once the raised central cones go to seed! Providing you with winter interest too.
Plant in masses with other hardy perennials throughout tricky slopes and sun-drenched hell strips along sidewalks and driveways for a lovely landscape effect! Pollinator gardens are ideal locations for these pollen and nectar-rich blooms!
- Tallest Black-Eyed Susan - Brilliant Yellow Petals & Raised Centers!
- Robust Green Foliage
- Attracts Wildlife & Pollinators
- Dark-Green, Rough-Textured Foliage
- Great in Massed Plantings, Excellent Cut Flowers, Containers & Sunny Beds & Borders
#ProPlantTips for Care:
Plant in full sun for the best flowering. They need at least six hours of sun a day. Well-drained soil is important, as well. Pay close attention to watering the first season. In-ground plants will become drought-tolerant after the first season. We do recommend that you protect your investment in extended drought by applying supplemental water as needed. These perennials appreciate 3-4 inches of arborist mulch over the root system to further protect your plants.
Leave the perennial tops up overwinter for protection and visual interest. Birds peck at the seeds, too. You can also deadhead the spent flowers if reseeding is an issue. Prune them down in early spring to an inch or two from the ground. Add flowering plant fertilizer or a top-dressing of compost at that time, if desired. Divide clumps once they get too wide in either spring or fall.
- Incredibly Hardy in Full Sun
- Widely Adaptable - Any Well-Drained Soil Type
- Rugged & Drought Tolerant Once Established
- Prune Spring Or Fall
- Valuable Perennial Comes Back Year After Year
- Deer Don't Prefer the Taste
Order the tallest and most impressive of the family when you order the Herbstonne Black-Eyed Susan from Nature Hills today! It will feel like you've planted rays of sunshine in your landscape!
