I have 5 different varieties of cyphomandra. Many absolutely loaded.
3 Red Beau a commercial variety. Acidic, yellow flesh red skin.
2
The original "wild" tamarillo. Spindle-shaped mildly tart orange fruit
2 Big red fruit with dark red flesh. Unnamed hard to get variety. The best.
1 Tango a mild new red skinned subacidic variety. Will be fruiting next year.
1 Bold Gold. Virtually nonacidic Gold variety.
1 Cyphomandra fragrans. Its fruits resemble small leathery orange tamarillos. Fruit next year. Unknown potential. New cultivar.
We love them all stewed with sucryl or sugar. Frost tender which will defoliate but not kill them unless severe.
Prone to powdery milder and whitefly. Needs hard pruning after fruiting.To call this a tree tomato is doing this fruit a diservice as except for a slight similarity it is used in completely different ways. A tree tomato sandwich would be completely lip puckering.
Will last 7 years and is easy to propagate indoors from seed in the summer.
A great book on tamarillo and other Andean crops is online here.
http://www.nap.edu/openbook.php?record_id=1398&page=316
Glenn