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Magnolia Cyclic Defoliation in Florida: Scale Check, Not Disease

Two Possibilities

  1. Natural cyclic defoliation: Florida magnolias sometimes shed leaves seasonally for no apparent reason. Arborist-confirmed.
  2. Scale insects: Reddish-brown spots on leaf undersides; ants on trunk (honeydew). Scales removable with fingernail; pale spot underneath.

Diagnosis

Inspect leaves very carefully with magnifier. Look for:

  • Small white flecks (juvenile scales) at leaf stems/trunk.
  • Ant trails.
  • Honeydew shine.

Treatment

  • Horticultural oils: Cool months only. Follow label precisely.
  • If no scales: Accept cyclic drop; fertilize/water for recovery.

German speaker? "Wenn ich fragen darf, sind Sie vielleicht Deutsche?" Magnolia in FL often defoliates cyclically. Rule out scale first.

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