"Radrazz" Knock Out Red Rose
"Radrazz" Knock Out Red Rose
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"Radrazz" Knock Out Red Rose

Sunlight
Watering
Fertilization
$45.00 CAD
$45.00 CAD

Rosa ‘Knock Out®’ is an iconic, low-maintenance shrub rose celebrated for its vibrant cherry-red blooms and exceptional disease resistance. Producing clusters of single to semi-double flowers from spring until frost, it delivers continuous, long-lasting colour even in heat and challenging conditions. Its compact, bushy habit and deep purplish-green foliage create a striking contrast, with added seasonal interest as the leaves take on burgundy tones in fall. Drought-tolerant, self-cleaning, and easy to grow, ‘Knock Out®’ is a reliable choice for borders, mass plantings, or containers, offering effortless beauty and strong performance for gardeners of all experience levels.

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Latin Name

Pot Size 2 gal

Buy In Store

Free Pick Up at 147 Chemin Eardley. Please see local delivery page for more information if you need delivery. Inventory may differ in store. Contact us for more information.
"Radrazz" Knock Out Red Rose
"Radrazz" Knock Out Red Rose
147 Chemin Eardley

147 Chemin Eardley
Gatineau QC J9H 7G5
Canada

+16133159720

Pickup available, usually ready in 24 hours

"Radrazz" Knock Out Red Rose
"Radrazz" Knock Out Red Rose

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Roses

🌱 Roses Care Guide
Roses bring classic beauty, fragrance, and vibrant colour to the garden, making them a standout feature in any landscape.

For best results, plant in well-draining soil enriched with compost or organic matter to support strong root development and healthy growth. Choose varieties suited to your space and light conditions, and water consistently to encourage abundant blooms. Regular pruning and care will help maintain plant shape, improve air circulation, and promote continuous flowering.

Spring
  • Uncover roses (late April to early May).
  • Prune dead/damaged canes just as buds swell.
  • Fertilize with balanced rose fertilizer (10-10-10 or 5-10-5).
  • Apply mulch to retain moisture & regulate soil temp.

Summer
  • June–August, water deeply once a week, more often in heat.
  • Deadhead spent blooms to encourage reblooming.
  • Watch for black spot, powdery mildew, and Japanese beetles.

Fall
  • September–October, stop fertilizing in mid-August to help plants harden off.
  • Remove diseased foliage to prevent overwintering pests.

Winter
  • November–March, hill soil or mulch 12–18" over crown for tender varieties.
  • Consider burlap wrapping or rose cones for Hybrid Teas.
  • Rugosa and Explorer roses may need no protection.

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