Knock Out Rose Care. Knock Out roses are relatively easier to maintain than other roses. It's a tough rose, grows in almost any well-drained soil in a sunny spot, and is more resistant to black ...

Question: My Knock Out roses have become very leggy. Is this a good time to trim them back and, if so, how far back should I cut them? Answer: Many gardeners take shears to these roses as they grow… ...

It should be mentioned that Double KnockOut roses are later versions of Radler’s originals and, as their name implies, they have a double layer of petals. And Sunny Knockout, by the way, is ...

To insure continuous flowering, feed your roses with a fertilizer blended especially for Knockout roses after each bloom cycle (ie. 3% N, 4% P and 3% K with 9% Ca, 0.5% Mg and 1% S).

The combined presence of five characteristics has made KnockOut roses such a success: disease resistance (no black spot or powdery mildew), drought tolerance, cold tolerance, self cleaning (no dead… ...

The combined presence of five characteristics has made KnockOut roses such a success: disease resistance (no black spot or powdery mildew), drought tolerance, cold tolerance, self cleaning (no dead ...