Fungi

Question

Is this a fungus? How can I treat it?

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Answer 1

I think what you're seeing are scale insects, possibly mealybugs, a type of scale insect that are usually white. These are unusual-looking insects that glue themselves to plant stems and leaves and feed on them. Please see these articles for advice:

https://www.gardeningknowhow.com/plant-problems/pests/insects/control-plant-scale.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/mealybugs-control.htm