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Cutting Knockout Roses to Ground in Fall: Fatal in New Jersey

Contractor Request vs. Plant Survival

Fence installer wants Knockouts cut to ground in late October (NJ). Owner usually prunes to recommended height in spring.

Consequence

  • Hard fall pruning forces tender new growth that a cold snap will kill.
  • Could lose entire plant.

Compromise

  • Shear back only the side touching the fence line.
  • Suggest chainsaw chaps for crew working in roses.

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