grapefruit skin turning brown

Question

My grapefruit tree appears healthy. The fruits are growing well. The skin looks rusty, especially on the underside. The leaves are nice and green. Is this a problem? The brown areas are flat and does not interrupt the rind.

Answer 1

Here is an extension article that you can use to identify what is ailing your grapefruit:

http://www.ipm.ucdavis.edu/PMG/C107/m107bpfruitdis.html

Happy gardening!