I have black spots on my flaming Katie. Help
They started showing up about a week ago. Then overnight I had every leaf with them and now the leaves are dying.
Without a description of the black spots, I would guess it's an insect, probably aphid, or disease. I suggest taking a sample to your local agricultural extension office for recommendations and identification. This article might help: https://www.gardeningknowhow.com/houseplants/kalanchoe/growing-kalanchoe-plants.htm