Rosa × 'Radtko' [sold as The Double Knock Out®]
The Double Knock Out Rose

Rosa × ′Radtko′ [sold as The Double Knock Out®] - Bark and Thorns
 Family:
 Genus:
 Plant Type:
 Growth Forms:
 Hardiness:
 Deciduous / Evergreen:
 Flower Notes:
Red (Abundant, large (3-3.5" dia.), fragrant, double, cherry-red flowers; summer through fall)
 Foliage Notes:
Green (Lustrous, deep green summer foliage); Purple (Handsome, deep purple fall color)
 Fruit Notes:
Red (Hips)
 Ultimate Height:
3-4 feet
 Ultimate Spread:
3-4 feet
 Light Requirements:
 Soil Notes:
Slightly acidic, moist, well-drained soils with a layer of mulch; drought tolerant once established
 Range:
Cultivated origin
 Diagnostic Characteristics:
Leaves are alternate, odd-pinnate, 5-9 leaflets (1-2" long), elliptic to elliptic-obovate serrate. Petiole base of rose leaves have a distinct flange (or wing). Thorny branches.
  Special Characteristics:
  • Flowering Characteristics 358
  • Border 378
  • Groupings 199
  • Mass Plantings 278
  • Specimen 612
  • Drought Tolerant 280
  • Fall Color 219
  • Fast Growth Rate 225

    • Additional Information

    The Double Knock Out Rose is a compact, bushy plant that prolifically produces fragrant, double, cherry-red flowers from summer through fall. While this is a very low maintenance and disease resistant rose, good cultural practices are still advised. Avoid wetting the foliage when watering, place the plant in an area with good air circulation, and remove dead or diseased plant matter as soon as possible. Branches are covered with thorns, making pruning difficult.

    2 Rosa × 'Radtko' [sold as The Double Knock Out®] found

    Building Map...

    = Heritage plant = Memorial plant
    Number Accession ID Location
    12018_01285*AMJIS
    22022_00546*AMJIS

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