Calamondin Orange Problems: Cottony Fungus and Scale

Two Calamondin Trees, Two Issues

One: cottony fungus on fruit (branching hyphae + yeast under microscope), fruit drop. Other: suspected scale.

Unified Treatment

Spray both with 100% pure neem oil (organic, doesn't wash off). Keep ground under canopy bare (sand/dirt only—no mulch, grass, weeds). Water weekly, minimum 3 inches, via drip or hose (keep water off leaves).