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Double Knock Out® Rose
3 Gallon - 2-Pack / Grow Pot / Plastic
$169
$199
15% OFF
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Our plant experts recommend:
Double Knock Out® Rose
$169
$199
15% OFF
Limited Time: Free Shipping Sitewide
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Premium Potting Mix
Nutrient-rich blend for healthy growth
$19
MitoGrow™ Bloom and Bed
$39
Premium Root Stimulant
Boost soil and reduces transplant shock
$12
Double Knock Out® Rose Information
About The Double Knock Out® Rose
Meet the Unstoppable Double Knock Out® Rose!
Ready to add a punch of vibrant color to your garden that keeps on swinging all season long? The Double Knock Out® Rose is your champion bloomer, boasting not just one, but two layers of fiery red petals.
Why Double Knock Out® Roses?
- Low Maintenance: Spend less time fussing and more time enjoying! These roses are designed for ease, requiring minimal pruning and care.
- Disease Resistant: Fear not the common rose woes! Double Knock Outs® are tough against black spot and other fungal diseases.
- Continuous Blooms: From spring until the first frost, your garden will be a non-stop showcase of dazzling red.
- Drought Tolerant: Worried about dry spells? These roses can take the heat and keep on thriving.
Perfect For...
Whether you're crafting a colorful border, a stand-alone specimen, or a dynamic hedge, the Double Knock Out® Rose adapts to your vision. Plus, they're ideal for those looking to attract pollinators like butterflies and bees to their garden oasis.
How to Care for Your Double Knock Out® Rose
Plant in a sunny spot, water regularly to establish, and watch these roses take off. A little fertilizer in early spring and you're set for a knockout performance.
Ready to Transform Your Garden?
Don't wait to get these hard-hitting beauties in your corner. Order your Double Knock Out® Roses today and prepare for a garden that packs a visual punch season after season!
Double Knock Out® Rose Details
Mature Height:
3-4 ft.
Mature Width:
3-4 ft.
Sunlight:
Full-Part Sun
Growth Rate:
Moderate
Botanical Name:
Rosa 'Radtko'
Grows Well In Zones:
5-10 outdoors
Does Not Ship To:
AK, AZ, HI, OR
Growing Zones 5-10 Outdoors
(Hardy down to 10° F)
Watering Requirements
Water deeply once a week, especially during their growing season and hot weather, to establish strong roots and promote healthy blooms. It's best to water in the morning to minimize evaporation and prevent fungal diseases by keeping the foliage dry.
Sunlight Requirements
Thrives in full sun, needing at least 6-8 hours of direct sunlight daily for optimal blooming. Too much shade may produce fewer blooms and become leggy as they stretch toward the light.
Humidity Requirements
Roses thrive best in moderate to high humidity, making them well-suited for warm climates when given proper care. While they adapt well to humid conditions, poor air circulation in high humidity can occasionally encourage fungal issues like black spot or powdery mildew, whereas excessively dry, arid conditions can crisp delicate foliage and shorten flower life.
Pet-Friendly Plant?
Yes, this plant is safe for homes with pets.
What is the difference between a single Knock Out Rose and a Double Knock Out Rose?
The primary difference lies in the flower structure and cold hardiness. Single Knock Out roses produce classic 5-petal blooms, whereas Double Knock Out roses yield full, double blooms with 18–25 petals that closely resemble traditional hybrid tea roses. The Double Knock Out variety also exhibits slightly superior winter hardiness and a denser, bushier growth habit.
How often should I water Double Knock Out Roses?
Water deeply 1–2 times a week during the first growing season, ensuring the soil stays consistently moist but well-drained. Once established, Double Knock Out Roses are notably drought-tolerant, but deep watering during hot, dry spells is essential for continuous flowering through the summer.
Do Double Knock Out Roses need deadheading or pruning?
Double Knock Out Roses are self-cleaning, meaning spent petals drop naturally without requiring tedious deadheading to keep blooming. However, a major hard pruning in late winter or early spring (cutting the bush back by one-third to one-half its height) promotes vigorous new canes and maximum flower production.
Our planters are made from the highest quality materials, and designed to complement a range of styles.
Fiberglass Planters
No Exterior Planter
Agnes
Lightweight fiberglass with a drainage hole and removable stopper
Mexia
Lightweight fiberglass with a drainage hole and removable stopper
Grow Pot
Plastic container with drainage holes used by our greenhouse
All of our plants ship in premium packaging for zero damage on arrival. Here’s what you can expect in your box on arrival:
Your Double Knock Out® Rose
Fully rooted in a nursery pot with soil intact
Custom Protection System
Corner guards, soil stabilizer, and branch sleeves keep it secure
Pre-Watered & Ready
Each plant is watered 24 hours before it is shipped
Care Instructions Card
Survival guide for your first 30 days of growing is included
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Why Choose The Sill?
Not all Double Knock Out® Roses are created equal
Greenhouse Grown
Not warehouse-held.Acclimated before shipping.
Indoor Ready
Pre-conditioned to lower light conditions.
Fully Potted
Soil intact. No repotting stress.
Damage Guarantee
Free replacement within 48 hours.