Miniature Tangerine Tree

Question

I have a miniature tangerine tree that is very fruitful; however, the tangerines are getting more sour every year. Every year there are more fruit, but they are smaller and more sour.

Answer 1

This article might give you some answers: https://www.gardeningknowhow.com/edible/fruits/fegen/fixing-sour-fruit-problems.htm