Encore® Autumn Sunset® Azalea
Rhododendron ’Roblen’
- Stay Protected with Plant Sentry ™
Encore® Autumn Sunset® Azalea - #3 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 |
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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
Encore® Autumn Sunset® Azalea 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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Pollinator Friendly
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Pollinator Required
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Pruning Time
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Bloom PeriodLate Spring, Summer, Fall

Growing Zones 6-9
Repeat blooming Azalea with fiery blossoms! Encore® Autumn Sunset® Azalea (Rhododendron 'Roblen') has repeat, fiery-red flowers that bloom from spring into fall. This remarkable Azalea variety and one of the well-known Encore® series is ablaze with color from spring through fall. The brilliant hues of orange and red are reminiscent of an autumn sunset, giving this one-of-a-kind Azalea its name!
It tends to bloom early, so you can be assured of a magnificent spring show to rival any other plant in your landscape. Just when you think the flaming red flowers are done, another round of fantastic blooms will appear, and continue right up into autumn! These broad-leaved evergreens light up the landscape with their green foliage throughout the rest of the growing season. Your butterflies and Hummingbirds will love this Azalea, and so will you for its ease of care and adaptability to a variety of conditions!
Encore® Autumn Sunset® Azalea has an upright, rounded nature and is adaptable to a variety of conditions. Reblooming Encore® Azaleas are a rather compact, and relatively low-maintenance Azalea, the blazing orange-red color is just the icing on the cake. It's a great choice if you'd like an Azalea that provides a lot, but asks little in return! Adaptable and hardy throughout USDA growing zones 6 to 9, growing 2-3 feet in height and 3-4 feet in width.
Planting and Application:
As a standout fiery specimen and focal point among your mixed shrub borders and garden beds, Autumn Sunset® kicks your curb appeal up a few notches and is sure to get your landscape noticed all year long! It has a compact nature that makes it ideal as a container planting on your back patio, as privacy planter gardens, and perfectly suited for smaller gardens!
Autumn Sunset® is sure to create a head-turning display in your yard, or you could plant a few for a lively border. Why not use these as a pretty backdrop for your other gardens and landscape borders? Enjoy being creative with this year-round stand-out! Flowering privacy screens are worth their weight in gold! Use it to hide nosy neighbors along your patio seating. Speaking of neighbors, they'll appreciate a 'friendly fence' along your property line.
- Flaming Red-Orange Blooms
- Repeat Flushes of Spring, Summer & Fall Flowers
- Great Green Broad-Leaved Evergreen Foliage
- Hummingbird & Bee Friendly!
- Great Container Plant, Specimen, Vibrant Accent & Four-Season Color
#ProPlantTips For Care
Rhododendrons and Azaleas will even do well in part shade or sun! Enriched well-drained soil is a must. Ensure their roots have life-long symbiotic support with Nature Hills Root Booster used during planting. Remember not to plant these shallow-rooted plants too deeply. Mound them up in a hill of extra soil, leaving an inch or two of the root ball showing.
You'll then bring a three-inch layer of mulch up around the base of the plant. Last, pull the mulch back away from touching the stems. Water consistently during the first season. Thereafter, you'll want to give them regular deep drinks when the weather gets dry.
Prune to shape, but wait until after the blooms are finished! Don't wait too long, as you might accidentally trim off next year's flowers. Weed your plantings regularly. Avoid underplanting near your Azalea to give the roots room to spread. Feed with slow-release fertilizer for acid-loving, ericaceous plants. Follow the label directions for timing and application rates.
- Full Sun & Partial Shade
- Acidic Enriched Well-Drained Soil
- Moderate Moisture & Mulched Beds
- Prune Immediately After Spring Flowers Fade
- Drought Tolerant Once Established
Among the vast array of Azalea varieties to choose from, Encore® Autumn Sunset® Azalea has proved itself to be an exceptional choice. You can't go wrong with an Autumn Sunset® in your landscape!
Azalea and Rhododendron Frequently Asked Questions
Where is the best place to plant an Azaleas?
Azaleas and Rhododendrons prefer partial shade (both dappled shade all day or morning sun with afternoon shade). Plant in a slightly acidic, consistently moist, enriched, and well-drained soil location for best results. Their shallow roots dislike soggy soil but thrive with a 3-4 inch layer of arborist mulch over their surface.
How big does an Azalea get?
Encore® Autumn Sunset® Azalea can grow around 2-3 feet tall and 3-4 feet in width when grown in optimal conditions.
Are Azaleas low maintenance?
Azalea and Rhododendron shrubs are very easy to grow and low maintenance. Water during drought, prune only after flowering and fertilize with an acid-loving organic, slow-release flowering plant fertilizer.
What is the difference between Rhododendrons and Azaleas?
All Azaleas are Rhododendrons but not all Rhodondendrons are Azaleas. Azalea tends to be smaller-sized with smaller leaves and stems, while Rhododendrons can be larger with stout branching and larger bloom trusses. There can both be either deciduous or broad-leaved evergreens.
How Do I Find Azaleas and Rhododendrons for Sale Near Me?
Make your life easier and your yard happier by shopping for Azaleas at NatureHills.com online nursery. You'll find a massive selection of flowering bushes for sale, including many lovely varieties!
Choose the right shrub for your area by first finding your growing zone by entering your zip code in the field above the Plant Highlights section on our product pages. Narrow down your options by plant hardiness zone, sun availability, and size requirements.
Place your order, knowing it's backed by the Nature Hills Nursery product guarantee and protected by Plant Sentry™, which helps ensure regulated plant materials aren't sent to prohibited areas.
Expect to receive your plants at the appropriate planting time for your growing zone when temperatures are safest to ship through and into.
What Shipping Options Do You Offer?
NatureHills.com works closely with our growers and nursery professionals to ensure we ship when it is most appropriate for your area. Our goal is to deliver the hardiest plants by avoiding extreme high and low temperatures. Check out our shipping schedule for more information and to learn our wills and don'ts when it comes to shipping plants. Find your Azaleas for sale here at NatureHills.com!