A few years ago, I obtained some budwood from a friend . One of them was a satsuma/flying dragon cross. I grafted one of the budsticks onto a flying dragon rootstock and kept the potted plant in my greenhouse for the last few winters. I noticed today that this gnarly looking tree had one fruit about the size of a golf ball. I decided to try the fruit expecting the ususal bitter trifoliate aftertaste that is present with just about every tri hybrid Ive ever tasted. The flesh was bright orange and not a seed to be found anywhere and best of all.. the taste was great! No bitterness, just a sweet, melting flesh that really surprised me! The tree has somewhat of a twisting, flying dragon apperance and about half the leaves are trifoliate type with the other half being like a regular citrus. After tasting this newbie, I took budwood and grafted a half dozen right then and there! I think this will make a great citrus for folks in zones 7 possibly even warmer areas of zone 6. Will keep you posted as I plan to plant this tree in the citrus grove come spring.

Is'n t it the "Prague" hybrid?

So there's hope yet for those of us in zone 8.

Description fits to satsuma x trifoliata which Bernhard Voss obtain in Prague University, years ago. Picture of ripe fruit from one of Berhards older posts (left corner).

It very well could be the prague hybrid. The picture of the fruit in the lower left corner appears to be very similar. Sorry, I cant get any pictures since I ate the only fruit that was on my small tree! Hopefully, my small grafts will take and I can trial some of these outdoors in a zone 8 winter. From the looks of the tree, I think they will be perfectly hardy!

Mentioned plant, we discussed in this topic link - there are pictures of this plant, which ressembling flying dragon.

great news

this sounds great Stan!