Petal Pals
shrub · 2005
Double Knock Out
Rosa 'Radtko'
3-4 feet
Height
Repeat
Blooming
Full sun
Light
5–10
Zone
Plant & Flower Traits
Rose type
shrub
Bloom size
medium
Bloom habit
clusters
Petal count
double
Flowering
repeat blooming
Habit
bushy
Color
red
Fragrance
none
Foliage
dark green
Foliage surface
semi-glossy
Fragrance Notes
no fragrance
Color Description
vivid cherry-red to deep pink
🌱 Growth & Garden Habits
Light
Full sun
Height
3-4 feet
Spread
3-4 feet
Soil
well-draining, slightly acidic soil
Hardiness Zone
Zone 5–10
Disease Resistance
highly resistant
🌿 Care Guide
Watering
moderate, consistent moisture
Fertilizer
balanced rose fertilizer during growing season
Pruning
minimal pruning needed, mostly for shaping
Pests & Diseases
excellent resistance to black spot and mildew
🧬 Pedigree
sport of Knock Out
🏆 Awards & Recognition
ARS Award of Excellence