Double Knock Out? Rose Shrub - Rosa

Double Knock Out® Rose Shrub (Rosa)

The Double Knock Out® Rose is a premium flowering shrub that delivers abundant blooms from summer through fall, featuring twice as many petals as its predecessor for a fuller, more luxurious appearance. This hardy variety resists common rose diseases like black spot, rust, and mildew while also repelling pest problems, making it exceptionally low-maintenance for gardeners of all skill levels. When you buy Double Knock Out® roses online from Florida Plant Nursery, you'll receive pre-pruned plants ready to establish quickly and reward you with continuous flowering throughout the season.

Landscaping Uses

Plant Double Knock Out® Roses in garden beds, borders, or mixed landscapes where they'll serve as reliable focal points or foundation plantings. These shrubs work beautifully in containers on patios and decks, or massed together for dramatic color impact. Space them 3 feet apart to allow for healthy air circulation and mature growth, and pair them with complementary perennials and ornamental grasses for visual interest.

Specifications

Height: 3–4 feet at maturity
Width: 3–4 feet at maturity
Growth Rate: Fast
Sun: Full to partial sun (4–8 hours daily; 6 hours minimum recommended)
Water: Consistently moist
Soil: Well-drained
USDA Zones: 5–11

Why Homeowners Love It

• Nonstop blooms from early summer to late fall with superior petal density
• Exceptional disease and pest resistance requiring minimal intervention
• Thrives in ground plantings or container gardens with no required pruning for fullness
• Fresh cut flowers available throughout the growing season for indoor arrangements

Planting & Care

Choose a well-drained location receiving full to partial sun, and dig a hole twice as wide and deep as the root ball. Plant at the same depth as the nursery container, then backfill and mulch to retain moisture. Water deeply once or twice weekly at the soil level rather than overhead, adjusting frequency during dry spells. Apply organic rose fertilizer monthly during the growing season. Each spring after establishment, prune back to 12 inches from the ground using sterilized shears for cleaner cuts and vigorous new growth.