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White Powder on Carrotwood: Powdery Mildew or Insects?

Diagnosing White Powder on Carrotwood Leaves

A uniform white coating suggests powdery mildew (fungal); clumpy deposits may indicate insects like scale or mealybugs. Both are usually cosmetic on established trees.

Management

If mildew, improve air circulation and avoid overhead watering. Fungicides rarely needed. For insects, horticultural oil or systemic insecticide if severe. Send a photo for confirmation.

Plant Diseases: Carrotwood Tree Bark Peeling: Canker or Root Rot Investigation Needed; Plants Under Carrotwood Tree: Choose Drought-Tolerant Species or Irrigate the Root Zone; Thrips Risk on Carrotwood Tree Replacement for Myoporum; Carrotwood Pale Curled Leaves After Pruning: Stress or Pests?; Carrotwood Tree Weeping Red Sap: Wound or Bacterial Ooze; Eliminating Carrotwood Suckers: Cut-and-Paint Glyphosate Method; Carrotwood Tree Near Foundation: Root Management vs. Removal; Carrotwood Tree Facts: Addressing Neighbor Concerns; Specimen Tree Selection for San Diego: Visit a Local Nursery; Powder Puff Tree: Fuzzy Red Blooms Nearly Year-Round

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