grapefruit tree

Question

We just bought a house, and there is a grapefruit tree in the backyard. It is about 12 feet high. I have removed the dead branches. There is not a lot of fruit, and the fruits are very dark. Some of the leaves are wrinkled and dark. What should I do? I really want to keep it.

Thank you in advance.

Answer 1

One possibility for the dark color is sooty mold. Please check this article to see if symptoms match:
https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm

This article discusses possible problems leading to few or no fruit:
https://www.gardeningknowhow.com/edible/fruits/grapefruit/grapefruit-tree-not-producing.htm

The dark, wrinkled leaves could be citrus leaf curl or one of the diseases discussed below:
https://www.gardeningknowhow.com/edible/fruits/citrus/curling-citrus-leaves.htm
http://ipm.ucanr.edu/PMG/C107/m107bpleaftwigdis.html