ornamental shrub
Double Knock Out rose
A nearly carefree landscape rose for hard-to-please sunny beds.
Growing Profile
- Hardiness
- Zones 5a-9a
- Sun
- Full
- Soil
- LoamClaySandy
- Water
- Low
- Deer pressure
- Frequently damaged Use as a deer browsing cue, not a guarantee; heavy deer pressure can override resistance ratings.
- Black walnut
- Mixed or uncertain Use as a black walnut / juglone planning cue; tolerance varies by cultivar, soil, and distance from the tree.
- Planting depth
- Set the crown or top of root ball level with the surrounding soil.
- Container min
- 10+ gal (workable)
- Goals
- Curb appeal & color
Harvest & Use
- Window
- red flowers from spring to frost
- Output
- 4-16 weeks of bloom/display/year
- First output
- 1-2 yrs
- Best for
- Curb appeal & color
Timing: red flowers from spring to frost. This profile tracks 4-16 weeks of bloom/display/year with a harvest or display window of 2-5 weeks where defensible.
Quick answers
Spacing, Yield, and Growing Answers
Direct planning answers for common grower searches, backed by the sourced profile data where available.
How far apart should you plant Double Knock Out rose?
Plant Double Knock Out rose at 3-8 ft apart. Adjust this starting point for trellises, hedges, rootstock, containers, pruning style, or local extension guidance.
How much does Double Knock Out rose produce?
Double Knock Out rose output is modeled as 4-16 weeks of bloom/display/year. Treat that as a planning range, because weather, soil, watering, pruning, pests, and local pressure can change the real result.
How long does Double Knock Out rose take to produce?
Double Knock Out rose usually reaches first useful harvest or display in 1-2 yrs under suitable conditions.
How do you grow Double Knock Out rose?
Grow Double Knock Out rose in USDA zones 5a-9a with full light, loam, clay, sandy soil, and low water. Use 3-8 ft apart for layout planning. Match the plant to drainage, heat, chill, and pest pressure before scaling up.
Can Double Knock Out rose grow in a container?
Double Knock Out rose can start with a container of about 10+ gal (workable). Larger containers usually buffer heat and moisture swings better than the minimum.
Plant photos
What it looks like in the garden
Use these photos to compare the plant's leaves, stems, flowers, fruit, and overall habit before you buy or plant.
Photos show a representative plant in the garden. Fruit color, size, and growth habit can vary by cultivar, season, nursery stock, and site.
Photo sources: F. D. Richards from Clinton, MI / Wikimedia Commons (CC BY-SA 2.0)
Quantitative Profile
- Full output
- 3-5 yrs
- Mature size
- 3-10 ft H x 3-10 ft W
- Spacing
- 3-8 ft apart
- Planting depth
- Set the crown or top of root ball level with the surrounding soil.
- Container min
- 10+ gal (workable)
- Productive life
- 10-30 yrs
- Difficulty
- 2/5
- Reliability
- 4/5
- Data quality
- Medium profile, No pound-yield source
Pound return is the stock-style yield metric. These are planning ranges for comparing plants, not guarantees. Cultivar, rootstock, climate, soil, pruning, pest pressure, and wildlife can move actual results.
Planting Checklist
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Right-size container with drainage
Containers / Before plantingUse a container large enough for mature roots, with open drainage holes to prevent root rot.
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Expanding container potting mix
Containers / Before plantingUse a lighter container medium instead of dense garden soil in pots and grow bags.
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Garden gloves
Tools / Planting dayProtect hands while digging, mulching, pruning, and handling thorny or rough-stemmed plants.
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Digging spade or shovel
Tools / Planting dayOpen planting holes, loosen compacted soil, and shape beds for larger transplants.
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Organic mulch
Soil / After plantingHold soil moisture, suppress weeds, moderate soil temperature, and protect shallow roots.
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Finished compost
Soil / Bed prepImprove bed structure and organic matter before planting annuals, perennials, shrubs, and trees.
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Watering wand or can
Watering / Planting dayWater new transplants gently without washing soil away from the crown or roots.
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Loppers or pruning saw
Maintenance / First dormant seasonHandle woody stems and branches too large for hand pruners.
Planting Strategy
- Planting depth: Set the crown or top of root ball level with the surrounding soil.
- Container minimum: 10+ gal (workable). Use 10+ gal; larger containers improve moisture buffering at maturity.
- Start with one plant when testing fit in a new bed or container.
Risk Factors
- Match the site first: full light, loam, clay, sandy soil, and low water.
- Use 3-8 ft apart as the first spacing model; adjust for hedges, trellises, containers, or local guidance.
- Plan around mature size: 3-10 ft H x 3-10 ft W.
- Deer pressure can be a real constraint for this plant; plan protection if browsing is common nearby.
- Local drainage, pests, chill hours, wildlife pressure, and microclimates can change the result.
Related Planning Guides
Comparable Plants
Sources & Methodology
This guide combines hardiness range, light, soil, water, harvest timing, traits, supplier links, plant relationships, and quantitative planning metrics. Pairings are screened for practical garden fit.
Quantitative values use extension and botanical-reference ranges where available. For less-studied cultivars, similar crops fill gaps conservatively. Ranges are intentionally broad so the profile stays useful without pretending to be exact.
Planning sources: NC State Extension Gardener Plant ToolboxMissouri Botanical Garden Plant FinderUniversity of Maryland Extension - Planting a Tree or ShrubUniversity of Maryland Extension - Starting a Home Fruit GardenUniversity of Maryland Extension - Types of Containers for Growing Vegetables
Supplier search: Amazon. Search links are not paid placements unless explicitly marked; affiliate listings may earn a commission. Last reviewed: 2026-05-31.