Double Knock Out roses usually do not require any fertilizer to thrive, but only nitrogen-based fertilizers should be used in the spring to promote more greenery. Care for a Knock Out bush with helpful information from a sustainable gardener in this free video on roses.

Expert: Yolanda Vanveen
Bio: Yolanda Vanveen is a third-generation flower grower and sustainable gardener who lives in Kalama, Washington. She is the owner of vanveenbulbs.com and has sold flower bulbs for more than 15 years.
Filmmaker: Daron Stetner

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