Madagascar Olive

Madagascar olive (Noronhia emarginata) is an evergreen tree native to Madagascar. Horticopia describes an oval to vase-shaped plant about 15–25 feet tall and wide, with year-round yellow flowers; its profile lists USDA zones 10B–11 and exposure from partial shade to full sun. ## Garden Use Its evergreen canopy and tolerance of maritime exposure suit warm coastal landscapes, streets, screens, and specimen plantings. Kew records the accepted species as native to Madagascar, while horticultural sources describe it as a useful ornamental in tropical regions. The existing catalog height is retained within the published approximate range. ## Growing Conditions Provide moisture-retentive, freely draining soil and shelter young plants from cold conditions outside the listed warm hardiness range. Horticopia reports sandy, clay, or loamy soil and a moist water requirement. Useful Tropical Plants describes the species as slow growing and tolerant of saline conditions and salt spray. ## Maintenance Allow space for a broad evergreen crown and prune only as needed to maintain a clear shape or fit the planting site. See the [Horticopia Madagascar olive profile](https://www.horticopia.info/Plants/013/norema000.html), [Useful Tropical Plants species account](https://tropical.theferns.info/viewtropical.php?id=Noronhia+emarginata), and [Kew Plants of the World Online record](https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:941424-1) for cultivation and botanical details.