Has anyone heard of this cross? I know there are already mandarin + poncirus crosses, such as the US 852 but those hybrids ripen in late fall/early winter after heavy frosts that damage fruit in lower zones.
Kishu mandarins (Citrus kinokuni mukakukishu) are very small mandarins which are seedless. The tree bears early, found a blog where someone had ripe fruit in September, so the fruit can ripen in the early fall or sooner, and is still edible when the peels are not fully orange.
It will be a few years, and I am a complete novice don't get me wrong, but I am interested in creating this cross using a better tasting Poncirus+ (I am acquiring this tree from a member of this forum) as the mother to possibly create a cold hardy hybrid tree for zone 7.
Thoughts?
