Couroupita guianensis, the cannonball tree, is a spectacular tropical specimen that earned its name from the massive, woody fruits that dangle from its branches like artillery rounds. Native to the rainforests of the Guianas in northeastern South America, this soft-wooded deciduous tree matures to 50-75 feet tall, occasionally reaching 100 feet, and produces some of the plant kingdom's most unusual and fragrant flowers. Winter hardy only to USDA zones 11-12, it demands full sun and organically rich, well-drained soil to thrive, rewarding patient tropical gardeners with showy blooms and the bizarre beauty of its legendary cannonball fruits.
Full Sun
Moderate
11-12
900in H x 720in W
—
High
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The cannonball tree produces flowers of singular strangeness, fragrant and showy enough to warrant placement as a specimen tree in tropical gardens. The real showstopper arrives with maturity: bowling-ball-sized woody fruits that develop on the trunk and lower branches, creating a surreal appearance unlike almost any other tree in cultivation. Its soft wood means it grows quickly in the right climate, though its size demands space and respect for the hazard posed by falling fruit.
The cannonball tree is grown almost exclusively as an ornamental specimen tree in tropical and semi-tropical gardens and botanical collections. Its primary appeal is horticultural and botanical rather than utilitarian; gardeners cultivate it for its architectural form, unusual flowering, and the remarkable visual impact of its large, woody fruits. The tree's sheer novelty and dramatic appearance make it a centerpiece for display in large, warm-climate gardens.
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Prune the cannonball tree to manage its size and shape, though its soft wood may require careful handling to avoid excessive damage or disease entry. Focus on removing dead or crossing branches and maintaining structural integrity, particularly in windy tropical locations. Because of its height potential and the hazard of falling fruit, selective pruning may be necessary to keep the canopy at a manageable height away from structures and high-traffic areas.
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“The cannonball tree is native to the rainforests of French Guiana, Suriname, and Guyana, where it evolved in the understory of one of Earth's most biodiverse ecosystems. As tropical exploration and horticulture expanded in the 18th and 19th centuries, seeds and specimens began traveling from South America to botanical gardens and private collections worldwide. Today, it is widely planted throughout tropical and semi-tropical regions across the globe, valued by collectors and botanical institutions for its extraordinary botanical oddity and ornamental presence.”