Citrumelo (Dunstan)

A variety of citrumelo, Dunstan, is also cold hardy to low teens or lower. It is a cross between the trifoliate orange and grapefruit. When allowed to ripen on the tree it tastes like a grapefruit. This fruit is softball size and yellow-orange when ripe. Like most citrus this plant prefers; half to full day sun light, well-draining, coarse soil and is self-fertile.