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When to Prune Knock Out Roses in North Carolina
When to Prune Knock Out Roses in North Carolina. In North Carolina, Knock Out roses are among the most popular rose varieties, according to extension horticulture agent Danny Lauderdale. Although Knock Out roses might require less maintenance than many roses, pruning is an essential chore.
In North Carolina, Knock Out roses are among the most popular rose varieties, according to extension horticulture agent Danny Lauderdale. Although Knock Out roses might require less maintenance than many roses, pruning is an essential chore.
Pruning New Roses
Pruning is the most important step in growing all roses in North Carolina, advises Kim Powell, extension horticultural specialist. She notes that pruning begins at planting time, which is typically in early spring at higher elevations or in either spring or fall in other parts of the state. Prune any broken roots off your Knock Out rose bushes before planting, and trim top growth to no more than 7 inches.
Annual Pruning
For established plantings, prune Knock Out roses in late winter to about 18 inches to encourage lots of new growth and summer flowers, recommends Charlotte Glen, North Carolina extension horticulture agent. The exact timing depends on when leaf buds swell, which may not be until April in the mountains, warns Powell.
Pruning at Other Times
Annual pruning removes winter-damaged Knock Out rose canes, but North Carolina gardeners should prune out diseased or damaged canes at any time. Extension agents recommend dipping pruners in a 70 percent alcohol solution between cuts to reduce the chance of spreading disease.
