Tamarillos or tree tomatoes are egg-shaped fruits native to South America. and seemed to perfectly meld the flavors of passion fruit, kiwi and tomato. fresh fruit or vegetables wasn't an option unless they were cooked well. The tamarillo is a small tree or shrub in the flowering plant family Solanaceae (the nightshade family). It is best known as the species that bears the tamarillo, an egg-shaped edible fruit. It is also known as the tree tomato, tamamoro, and tomate de árbol in South Plants can set fruit without cross-pollination, but the flowers are fragrant and. Fruit · Vegetables · Herbs & Healing · Ornamentals · Practical Help · Gifts For Gardeners . Allow one or two trails to grow in a greenhouse of conservatory for early fruit; The Passion Fruit originates from South America where the flowers are plant a good mulch of compost and feed during the summer with a tomato feed.