I have two Navel Orange trees that are both holding onto the fruit. Very few have fallen off. The oranges on the smaller of the two trees have turned black while the larger tree still shows oranges with the typical orange color. Is it normal for oranges to stay on the tree like this? It is the first time in 5 years that we have been here that it has happened.
Certified GKH Gardening Expert
Here is a link with orange tree harvest information.