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Knock Out Roses Defoliated by Black Spot After Daconil + Dish Soap

Chemical Overload Worsened Black Spot

Two memorial Knock Outs (Knoxville, TN) had black spot. Owner used Daconil (strong fungicide), then dish soap spray. Now nearly leafless.

What Went Wrong

  • Daconil damages roses in heat.
  • Adding dish soap on top stressed plants further.
  • Rain spread spores.
  • Stressed roses succumb to black spot.

Recovery Plan

  1. STOP all sprays. Let roses rest.
  2. Black spot won't kill them—just slows growth.
  3. Roses grow 3 leaf sets; they'll releaf.
  4. Apply alfalfa meal (2 handfuls per bush) as tonic.
  5. Be patient—Knock Outs are tough.

Memorial roses will recover naturally.

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