Bursera simaruba
| Light | Bright light to full sun; loves warmth |
|---|---|
| Water | Regularly in growth, letting the mix approach dryness; keep dry and cool when dormant/leafless |
| Soil | Fast-draining, gritty mix (see Soil and potting mix) |
| Temperature | Tropical; keep well above freezing, USDA zones 10–11 |
| Propagation | Cuttings (very easy) and seed |
| Toxicity | Non-toxic; the aromatic sap and bark are used in traditional topical remedies rather than being an irritant |
Bursera simaruba is a fast-growing tropical tree of the torchwood family, famous for its smooth, coppery-red bark that continually peels away in thin, papery flakes. Native to the Neotropics, it is grown by succulent and caudex enthusiasts as a thick-trunked, drought-adapted specimen — often trained as a bonsai — and is widely known by common names such as gumbo-limbo, the tourist tree (a nod to its perpetually red, "sunburnt" and peeling bark) and naked Indian.
Description
In habitat Bursera simaruba is a medium to large tree, but in cultivation it is usually kept much smaller, prized above all for its trunk. The bark is the signature feature: a glossy reddish-bronze skin that peels in thin, translucent sheets to reveal fresh greenish bark beneath. The trunk and branches are stout and can thicken quickly, giving even young plants a sculptural, weathered look.
The foliage is deciduous and pinnate, with several pairs of glossy leaflets carried on a slender stalk. Plants are drought-deciduous, dropping their leaves during the dry season or a cool winter rest and flushing out again with warmth and moisture. When cut or bruised, the wood and bark release an aromatic, resinous sap — a trait shared across the genus Bursera and the wider torchwood family, several members of which are the source of fragrant resins.
Small, inconspicuous flowers are followed by little three-parted fruits, though flowering is uncommon on the young, container-grown plants most hobbyists keep.
Distribution and habitat
Bursera simaruba has a broad Neotropical range, from southern Florida and the Caribbean through Mexico and Central America into northern South America. It is a characteristic tree of tropical dry forest and coastal thickets, thriving in poor, rocky or sandy soils and tolerating salt, wind and long seasonal drought. Its ability to grow readily from large cut branches makes it a popular living fence-post throughout its range.
Cultivation
Gumbo-limbo is one of the more forgiving succulent-adjacent trees, provided it gets warmth and light. Grow it in a very free-draining, gritty mix in a sunny position; it colours up best and stays compact in strong light. During the warm growing season water generously and let the mix approach dryness between waterings — this is a plant that genuinely enjoys a good soak when in leaf.
The key to keeping it happy is temperature. It is strictly tropical and resents cold; protect it from frost and reduce watering sharply once it drops its leaves for a winter rest. Grown hard in bright light with a snug root run, it develops the swollen, characterful trunk that makes it such a rewarding subject. See Watering and Repotting for general technique.
Because it back-buds freely and heals quickly, B. simaruba takes very well to pruning and is a popular choice for tropical bonsai and thick-trunked "fat plant" styling. Regular pinching keeps growth dense and encourages branching.
Propagation
Propagation is exceptionally easy. Large truncheon cuttings — even substantial branches — root readily when pushed into a gritty medium, which is why the tree is so often used for living fences in its native range. For hobbyists, smaller cuttings taken in the warm season strike quickly; allow the cut end to callus for a day or two first, then plant into a barely-moist, free-draining mix and keep warm. Seed also germinates well when fresh. See Propagation — seed for that route.
Note that cutting-grown plants tend to build a fatter trunk faster but a less impressive root system, while seed-grown plants may develop a more tapered, natural base over time.
Common problems
- Cold damage — the most common cause of trouble; chilled or frosted plants drop leaves, and prolonged cold can rot stems. Keep it warm.
- Rot — from a wet, airless mix, especially while dormant and leafless; keep it on the dry side during rest.
- Pests — scale and mealybugs may shelter in bark crevices and leaf axils; see Pests and diseases.
- Leaf drop — often simply seasonal or a response to sudden change in light, water or temperature rather than a real problem.
See also
- Bursera — the genus overview
- Soil and potting mix · Watering · Repotting · Propagation — cuttings · Propagation — seed · Pests and diseases