Light Needs
Mature Height
Mature Spread
Growing Zones
What a radiant plant! The Sunny Knock Out Rose produces oodles of fragrant blooms during its bloom season. The happy yellow buds open up to large cream white blooms. It is very resistant to disease and has a compact growth habit, making it a wonderful low hedge.
Foliage for the Sunny Knock Out® Rose is a glossy, deep green. This shrub is loaded with fragrant, creamy white blooms from spring through fall. The blooms begin as small yellow buds before opening to large blooms. This plant reaches four to five feet tall and wide. The Sunny Knock Out® Rose is a sought-after low hedge. Its other uses include; Accent or focal plant, border plant, planted for cut flowers, and does well when mass planted.
Sunny Knock Out Rose Care
The Sunny Knock Out® Rose loves the sun. It should be planted in full sun, receiving a minimum six hours of sun per a day. The soil should be loamy, well drained and remain moist. Soil Ph level should be neutral to slightly acidic. Water needs are average and should be watered regularly at the base. Mulching is beneficial to help keep roots cool. Prune in late winter or early spring. Do not apply fertilizer in the first year. Once established, apply fertilizer in the spring.
Sunny Knock Out Rose Spacing
The Sunny Knock Out® Rose grows to be four to five feet tall. Spacing for uses such as hedges, border planting, or when trying to achieve a seamless appearance, space four feet, center on center. When planting for other uses, space five feet, center on center. Proper spacing ensures your plant has room to flourish.
Sunny Knock Out® Rose Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 4 to 9 (perennial); grown as an annual elsewhere (outdoors year-round); grown indoors elsewhere (outdoors year-round); grown in containers elsewhere (grown as a seasonal crop)
- Sun Exposure
- Full Sun (6+ Hours Direct Sun)
- Mature Height
- 4-5 Feet
- Mature Spread
- 4-5 Feet
- Growth Rate
- Moderate
- Growth Habit
- , Mounded
- Water Needs
- Average
- Root Stock
- Own Root
Flowers & Foliage
- Flower Colors
- , Yellow
- Flower Description
- Bright yellow
- Bloom Time
- Summer to Fall
- Blooms On
-
New Wood
?
"Blooms on" tells you which stems produce flowers, which decides when it's safe to prune.
- New Wood: Flowers form on stems that grow this season. Prune in late winter or early spring without losing blooms.
- Old Wood: Flower buds form on last year's stems. Prune right after flowering. Pruning in fall or early spring removes next year's blooms.
- Both New and Old Wood: Blooms on last year's stems and again on new growth, so it flowers even after a hard winter or a mistimed pruning. Prune lightly after the first flush of blooms.
- When to Prune
- Late winter to early spring, before new growth starts
- Foliage Color
- , Green
- Foliage Description
- Semi Glossy Dark Green
- Foliage Type
- , Deciduous
- Seasonal Interest
- , Spring Flowering, Summer Flowering, Fall Flowering, 3 Season Interest
Garden Benefits
Plant Overview
- Common Name
- Sunny Knock Out Rose
- Botanical Name
- Rosa x 'Radsunny'
- Brand
- Knock Out Roses
- Plant Type
- Deciduous
Simple Plant Spacing Calculator
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
1.50 quarts
Also Known As:
2.5 Quart Pot
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 8"-12"
Pot Size:
~ 6.5"H x 6.5"W
Volume:
2.20-2.30 quarts
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts
Also Known As:
#2 Container
2 Gallon
Plant Age:
~ 1.5 - 3 years old
Plant Size:
~ 12"-18"
Pot Size:
~ 9.5"H x 9.5"W
Volume:
1.19-1.76 gallons
Also Known As:
#3 Container
3 Gallon
Plant Age:
~ 2 - 4 years old
Plant Size:
~ 12"-30"
Pot Size:
~9.5"H x 11"W
Volume:
2.32-2.76 gallons
Also Known As:
#5 Container
5 Gallon
Plant Age:
~3-4 years old
Plant Size:
~ 20" - 60"
Pot Size:
~11" H x 10 1/2” W
Volume:
3.5 - 4 gallons
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We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days.
Starting January 1, 2026 all bushes, perennials & trees purchased come with an extended 1-year warranty for added confidence. If your plant dies due to a health issue within a year, we’ll make it right.
Plants that are currently in stock typically ship within 2-7 business days after your order is placed.
Plant Addicts ships to the lower 48 states within the U.S. Unfortunately, we do not currently ship to Alaska, Hawaii, or internationally.
This plant cannot be shipped to the following states: AK, HI. These restrictions apply only to this specific plant due to agricultural regulations or other limitations. Other plants may still be available for shipping to these states.
If you have any questions about shipping restrictions, feel free to reach out to our team!