"Sandra Bodycoat" wrote in message
. au...
Hi

I am in Perth and have a heavily laden navel orange tree, I want to know
how do I know when the fruit is truly ripe.
Last year we picked fruit only to find they looked ripe but were still a
bit sour.
Thanks
Sandra

At this time of the year in Perth the navels have just about all gone, they
ripen in June/July and are sweet around that time.

More likely your oranges are Valencias. Good for juicing, not as good for
eating as Navels but still reasonable. I found that mine are still sour at
this time of year and don't "sweeten up" until late August/ September.