Survives zone 8 through 9
Yellow-orange fruit — sweet, aromatic, guava-meets-lime. Among the hardiest useful Myrtaceae and the best bet in this group for a cool climate. Care: Winter protection — mulch, fleece, or a warm wall.
Fertilizing. Brazilian growers amend the planting hole with lime, wood ash, and well-rotted organic matter, then feed twice a year with compost, manure, or leaf litter; sources differ on whether it truly needs fertile soil or merely tolerates poor ground, so treat this as provisional.
How it spreads. Grows as a single-trunked tree rather than spreading; it does throw up basal shoots at the trunk base that growers routinely prune away to keep a clean tree form.
Growing tips. Prune in late winter to remove basal shoots and crowded interior branches. It is slow to bear (roughly 3-6 years from planting) and only lightly frost-tolerant (to about -3°C/27°F). This species is rarely cultivated outside its native range, so documented growing advice is thin compared to the other species here.