When Should I Fertilize A Double Red Knock Out Rose?

Filed Under: Roses, Fertilizing · Keywords: How Often, When To, Fertilize, Knock Out, Rose · 1773 Views
how often and when to fertilize and how late in zone 8

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Answer #1 · Maple Tree's Answer · Hi Larry-You can fertilize newly planted Knock Out Roses with a mild, natural plant food such as fish emulsion, cottonseed meal, or Osmocote. Fertilize in early spring when the new growth begins to emerge and then about every 4 to 6 weeks throughout the season. Established roses can be fertilized with a fertilizer specifically formulated for roses (Rose Food) or an organic fertlizer. In zone 8 you would stop fertilizing your roses about two months before the first frost date. I noted a link below to an article that will help you with the fertilizing and watering of you roses. Just click on the link to go directly to the article.


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