I love how Ugni Molinae is just planted around golden gate park randomly , the botanical garden nursery is fairly prolific.
While there is not much in the way of good edible fruit at the botanical garden, there is a number of neat species to check for.
Bolivian mountain Coco's, Mac Nut, and different unique Passiflora hybrids. Not to mention it is just an epic huge garden .
You could also go to the giant glass greenhouse in golden gate park that is a mile or so from the arboretum.
There are a lot of non fruiting big tropical fruits there and it is really cool in it's own right.
Well worth the visit there was well.
For fruits go to the Ferry building farmers market for the best selection of CA grown organic fruit, direct from the farm.
Species in SFBG
Austromyrtus dulcis
Drimys lanceolata
Luma apiculata
Syzygium smithii
Ugni molinae
at least a few more