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Deadhead Hydrangeas Now, Then Pause a Month Before First Frost

Removing spent blooms diverts energy to roots, boosting plant vigor for larger flowers next spring.

Overview

  • Millcreek Gardens specialists advise continuing deadheading through the season into early autumn, then stopping about a month before the local first frost to protect next year’s buds.
  • Trim each faded hydrangea bloom just above a pair of healthy leaves or at the next set of large leaves using sharp pruners.
  • Sterilise secateurs with an alcohol-dampened cloth and wipe blades as you work to reduce the risk of fungal infection.
  • Clear fallen leaves from around shrubs to limit pests and avoid excess nitrogen release that can overfeed plants.
  • The task takes under five minutes and helps produce stronger plants with more abundant blooms next spring.