Harvest Time
120 days
Difficulty
moderate
Growing Methods
USDA Hardiness Zones
Optimal Growing Conditions
About Knockout Roses
Knockout Roses are popular landscape roses known for their exceptional disease resistance, continuous blooming, and low maintenance requirements. They bloom from early spring through late fall until the first hard frost, with 5-7 bloom cycles per growing season, each lasting approximately 5-6 weeks. First blooms appear in April in most regions. These versatile roses are available in a range of colors including red, pink, yellow, and white.
General Care Instructions
Sunlight Requirements
Full sun (6-8 hours minimum) for best flowering. Can tolerate partial shade but may produce fewer blooms.
Watering Needs
Water when the top inch of soil is dry. Established plants are moderately drought-tolerant but bloom best with regular watering.
Temperature Range
Tolerates a wide temperature range from 60-90°F (15-32°C). Protect from frost.
Fertilizer Requirements
Apply balanced fertilizer every 4-6 weeks during the growing season. Avoid high-nitrogen fertilizers which promote foliage over flowers.
Harvesting
Flowers can be harvested when blooms are fully open, typically 120 days from planting. Cut stems at a 45-degree angle in the morning when flowers are hydrated. Remove spent blooms to encourage more flowering.