Plant of The Week-Knock Out Rose

Posted by Andrea Monico on Mon, May 08, 2017 @ 11:39 AM

This week, the Plant of the Week is the Knock Out Rose!

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Ideal Growing Zone: 5 to 9

Plant Description: 3 to 4 feet tall, spreads 3 to 4 feet, blooms from June to frost, cherry red and pink flowers

Growing Conditions: Grows best in full sun to part shade, tolerates air pollution, some maintenance is required 

Uses: This rose grows well as a specimen or in small groups in borders, foundations or rose gardens. Also effective as a hedge. Excellent selection for part shade landscape locations.

Plant Care: Grow in medium moisture, slightly acidic, well-drained garden loams in full sun to part shade. Unlike most roses, KNOCK OUT will grow very well in part shade locations with excellent disease resistance. Water deeply and regularly (mornings are best). Avoid overhead watering. Good air circulation promotes vigorous and healthy growth and helps control foliar diseases. Summer mulch helps retain moisture, keeps roots cool and discourages weeds. Remove spent flowers to encourage rebloom. Crowns may need winter protection in cold winter areas. Remove and destroy diseased leaves from plants, as practicable, and clean up and destroy dead leaves from the ground around the plants both during the growing season and as part of a thorough cleanup during winter (dormant season). Prune as needed in late winter to early spring.

Pests and Disease: Roses are susceptible to a large number of diseases, the most common of which are black spot, powdery mildew and rust. Although good cultural practices are the first line of defense in disease control, regular preventative fungicide applications throughout the growing season are often required, particularly in humid climates with regular rainfal. It should be noted, however, that KNOCK OUT has excellent resistance to the aforementioned diseases, and often does not need regular fungicide treatments. Potential insect problems include aphids, beetles, borers, scale, thrips, rose midges, leafhoppers and spider mites.

If you want to know more about this plant, have a plant you want to be featured next week, or have any questions in general, please contact us!

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According to the USDA plant hardiness zone map, Omaha is considered to be in plants zone 4b-5b.


Topics: CMs A Cut Above, landscape, Plant of the Week