Why Are My Banana Croton’s Leaves Falling Off?

Question

Hello! I’ve had my banana croton for nearly 8 years and it’s the first time I’ve had this problem. Several leaves are falling off, all of which have a white residue mainly near the center of the leaves (zoom in on attached photo). One small area had a tiny web, so maybe spider mites? Any idea what else it could be?

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Answer 1

I would say that spider mites is the correct diagnosis. Here are some articles that will help:

https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-treatment.htm

https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-control.htm

https://www.gardeningknowhow.com/plant-problems/pests/pesticides/azadirachtin-vs-neem-oil.htm

https://www.gardeningknowhow.com/houseplants/croton/care-croton-plants.htm