Calamondin Fruit Has Soft Discolored Bottom

Question

This is the first ripe fruit taken from our calamondin tree. The tree is in a pot and has been outside all spring/summer (zone 8A). The one fruit has a soft discolored base, clearly not healthy I suspect. The fruit just reached a full orange color, did I wait too long to remove it from the tree?

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Answer 1

I notice signs of multiple nutrient deficiencies. Calcium is lacking, for sure, but I could say that sulfur and nitrogen were lacking, as well.

Citrus are, somewhat, heavy feeders. I would feed them with a citrus fertilizer pretty often. This article will help:

https://www.gardeningknowhow.com/edible/fruits/calamondins/growing-calamondin-trees.htm