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Hoya Leaf Drop: Investigating Water and Environment

A 40-year-old hoya bloomed profusely, then leaves yellowed (green veins first) and dropped. Iron fertilizer didn't help. Gets some direct sun, strong indirect light, unmoved.

Expert's Diagnostic Questions

Darlene asked for:

Soil moisture (wet/dry)?
Anyone else watering?
Recent changes: drapes, heating, repotting?
Insect inspection?

Likely Causes

Watering issue (usually too much) or environmental change. Hoyas hate wet feet. Answering questions enables targeted fix.

House Plants: Hoya Leaf Spot Fungus: Rain, Repotting, and Recovery; 20‑Year‑Old Hoya Not Blooming: Light, Pruning, and Fertilizer Fixes; Diagnosing Yellow Leaves on Annual Vinca (Periwinkle); Cymbidium Yellow Bulbs and White Leaves: Too Much Sun in Australian Climate; Diagnosing Yellow Leaves and Wilted Blooms on Newly Planted Roses; Leaves Dropping at Base: Need Plant ID and Clarification; Ficus Trunk Moisture: Possible Root Rot; Why Hoya Flowers Drop Before Opening; Why Holly Bushes Turn Yellow from the Center Out; Tomato Yellowing Then Browning: pH, Fertilizer, or Water Diagnosis

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