I have what has been represented to me as a pink grapefruit that has yellow fruit. I've been told that it will not turn pink because our winters are too cold but most probaly our summers are no hot and dry enough. Dose anyone have any advise? John
Coastal California is a poor location for most citrus because it lacks the heat necessary to properly mature the fruit. It's unlikely that it's too cold in Winter which actually allows the acidity to drop causing sugars to be more dominant to the taste. Color may also be less intense due to under maturity though usually it's color is pink long before it's fully ripe. I think it's more likely you have a mismarked plant from the grower.
Thank you for theadvice, the grower said he will take it back. Think that's what I will do. Again thanks.