Hello,
I'm hoping to grow sweeter kinds of citrus but I'm in San Francisco bay area along the coast. I know that since my summer is somewhat short and very mild, this will be difficult. I've heard that the longer the citrus can hang on the tree, the best chance it has of gaining some sweetness. I'm trying to identify any citrus that could potentially fulfill these criteria. I know I won't get anything near a fully sweet orange but, anything that could get at least partway there would be great. These below were pretty much all I could find, and a lot of it was based on just comments by people or articles online.
Oro Blanco pummelo (trying now) - have read that it can hang on tree and doesn't need as much heat to get sweet
Tahitian pummelo - read it tastes great and can potentially do alright in cooler/milder climates
Valentine pummelo - low acidity and can potentially do alright in cooler/milder climates
Murcott mandarin - read somewhere it could potentially do alright in cooler/milder climate
Meiwa kumquat - sweet rind and flesh, less acidic and holds well on trees
Honestly it has been difficult to find any info but I wasn't expecting it to be that easy or extensive. If people had suggestions for other kinds of citrus that could work, I'd love to hear your opinions.