How to Fertilize Double Knock Out Roses

Double Knock Out Rose image by H.B. Dean


Since their introduction in 2000, Knock Out Roses have become a favorite among gardeners. Once planted, these disease resistant roses are among the most carefree rose. With the right type of rose food, fertilizing Double Knock Out Roses is a simple task.

Step 1

Prepare the gardening site for ground the Double Knock Out Rose. Several weeks before planting the rose, incorporate generous amounts of well-rotted compost or manure into the soil.

Step 2

Spread a 2-inch layer of mulch under the rose year-round. For newly planted roses, cover the bud union (the place where the rose's roots and canes meet) with mulch. When new red leaves emerge, gradually remove the mulch from the bud union.

Step 3

Fertilize the Double Knock Out Rose in the spring, after pruning. According to Rose Gardening Made Easy, "Sprinkle some time-released rose fertilizer around the plants. That's usually all the rose food they need all season."

Things You'll Need

  • Shovel
  • Compost or well-rotted manure
  • Mulch
  • Time-released rose fertilizer


  • The Complete Garden Flower Book: Catie Ziller, Publisher; 2001
  • Conrad Plye: Knock Out Plants

Who Can Help

  • Rose Gardening Made Easy: Knock Out Roses
Keywords: roses, Double Knock Out, fertilizing

About this Author

After attending Hardin Simmons University, Kay Dean finished her formal education with the Institute of Children's Literature. Since 1995, Dean has written for such publications as "PB&J," Disney’s "Family Fun," "ParentLife," "Living With Teenagers" and Thomas Nelson’s NY Times bestselling "Resolve." An avid gardener for 25 years, her experience includes organic food gardening, ornamental plants, shrubs and trees, with a special love for roses.

Photo by: H.B. Dean