Help With Yellow Leaves On Fruit Trees

Question

I have a tangerine and a lemon tree. They were both doing great. The tangerine has started producing fruit for the first time ever. Almost overnight, leaves yellowed and fell. Nothing changed with watering schedule. Now hibiscus in yard are severely yellowed and falling off. I’ve check soil with my hand, seems decent.

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Answer 1

Make sure that you test your soil for nutrient deficiencies and pH swings. After that, you can begin to test for disease.

I see signs of drastic pH swings, but this can lead to fungal infections, which I am also seeing.

These articles will help;

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-moisture-in-plants.htm

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/test-soil-for-pests-and-diseases.htm

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/making-sure-soil-drains-well.htm

https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm

https://www.gardeningknowhow.com/edible/fruits/lemons/how-to-grow-a-lemon-tree.htm

https://www.gardeningknowhow.com/edible/fruits/tangerine/tangerine-tree-care.htm