Knock Out Roses

Knock Out Roses Care

Rosa 'knock Out'

What is the plant

Knock Out' is a medium, bushy shrub, 2 to 4 ft (60—121 cm) in height with a 3 to 4 ft (90—120 cm) spread. Blooms are 2—3 in (5—7 cm) in diameter, saucer-shaped, with single to semi-double (5—13) petals. Flowers open from attractive buds, and are a bright cherry red with a white center and green-yellow-stamens. Flowers have a strong, fruity fragrance, and bloom in flushes from spring through fall. 'Knock Out' is disease resistant and blackspot resistant, but is susceptible to mildew. The shrub has glossy, dark green foliage. New stems and growth are purple. The plant thrives in USDA zone, 4 and warmer.

If you’ve recognized any mistakes feel free to notify us about it. This would help us to provide only the best-quality information.

Humidity

Normal

Lighting

Full Sun

Hardiness zone

5 - 11

Difficulty

Medium

Hibernation

Cold Period

How to Care for the Plant

Water
Medium
Pruning
A good early spring pruning is highly recommended to help get the top performance out of these fine shrub rose bushes.
Fertilizer
When caring for Knock Out roses, feeding them a good organic or chemical granular rose food for their first spring feeding is recommended to get them off to a good start. Foliar feedings from then on until the last feeding of the season works just fine to keep them well-fed, happy, and blooming.

Disease diagnosis

Check your plant’s health

Ease your plant care routine with PlantIn's personalized system.

Temperature
They are extremely heat tolerant, thus they will do well in the most sunny and hot of locations.
Popularity
2,078 people already have this plant 289 people have added this plant to their wishlists