Furcraea foetida (L.) Haw. is the most widely cultivated, most widely naturalised and most economically significant species in the genus Furcraea. Known commercially as Mauritius hemp, Green aloe or Giant cabuya, this large, stemless rosette plant has been carried from its native Caribbean and northern South American range to virtually every tropical and subtropical region on Earth — first as a fibre crop, then as an ornamental. Its variegated cultivar ‘Mediopicta’, with a luminous cream-yellow central stripe on each leaf, is arguably the single most commonly grown ornamental furcraea in the world.
But Furcraea foetida has a darker side. Classified among the 200 most invasive environmental weeds in Queensland, listed in the IUCN Global Invasive Species Database, and targeted for eradication on Lord Howe Island (Australia), in Hawaii, Florida, South Africa, New Zealand and Brazil, it is a textbook example of an ornamental plant turned ecological problem. Its reproductive strategy — thousands of bulbils produced on a single flowering stalk, each capable of establishing a new plant without pollination — makes it an extraordinarily effective coloniser of disturbed land, coastal cliffs and oceanic islands.
For gardeners in USDA zones 9b through 11, Furcraea foetida remains a superb architectural plant. But this article also addresses the critical responsibility that comes with growing a known invader.
Taxonomy and nomenclature
Original description
The species was originally described by Carl Linnaeus in 1753 as Agave foetida in the first edition of Species Plantarum. The epithet foetida (Latin for “foul-smelling”) refers to the intensely fragrant flowers, which are strongly scented — more sweet than foul to most noses, but apparently overwhelming to Linnaeus. The species was transferred to Furcraea by Adrian Hardy Haworth in 1812.
Synonyms and trade names
The most widespread synonym is Furcraea gigantea Vent. — a name still encountered extensively in the nursery trade, botanical garden catalogues and older horticultural literature. Other synonyms include Furcraea atroviridis, Furcraea madagascariensis and Furcraea viridis. The variegated cultivar is correctly Furcraea foetida ‘Mediopicta’, not Furcraea gigantea ‘Striata’ as it sometimes appears.
Systematic position
Family Asparagaceae, subfamily Agavoideae (APG IV, 2016). The genus Furcraea Vent. is closely related to Beschorneria and more distantly to Agave, from which it differs primarily in its campanulate (bell-shaped), pendulous flowers versus the narrowly tubular, erect flowers of Agave.
Common names
Mauritius hemp, Green aloe, Giant cabuya, Malagache aloe, Cuban hemp, Mediterranean hemp (English); Chanvre de Maurice, Aloès vert (French); Cáñamo de Mauricio (Spanish).
Morphological description
Habit
Furcraea foetida is a large, stemless or shortly stemmed succulent perennial forming a dense rosette of numerous long, sword-shaped leaves. Mature rosettes typically reach 1.2–1.5 m in height and 1.5–2.5 m in diameter, though exceptional specimens in tropical conditions can exceed 2 m tall and 3 m across. A short stem (to approximately 1 m) may develop with age, but most garden specimens remain effectively acaulescent throughout their life.
Leaves
Leaves are sword-shaped, 1.0–1.8 m long (occasionally to 2.5 m) and 10–20 cm wide at their broadest, narrowing to 6–7 cm at the base. They are somewhat flexible — distinctly less rigid and less succulent than those of most agaves of comparable size. Colour is deep green in the type form. The leaf apex terminates in a short, sharp spine tip. Critically, the leaf margins of the green type are smooth or bear only a few widely spaced prickles along the lower portion — a key distinguishing feature from the heavily armed Furcraea selloa and Furcraea tuberosa.
The cultivar ‘Mediopicta’ features a broad cream-yellow medial stripe with green margins, creating a highly decorative, luminous effect. This is by far the most commonly grown form in ornamental horticulture.
Inflorescence and flowering
Furcraea foetida is monocarpic: each rosette flowers once and dies. Flowering occurs after 7–10 years in optimal tropical conditions, but may take 15–20 years or more in cooler Mediterranean climates. The inflorescence is a massive, erect panicle reaching 5–10 m (occasionally to 12 m) in height. The flowers are bell-shaped, greenish to creamy-white, pendulous, 4 cm long, and intensely fragrant — especially at night, suggesting adaptation to moth or bat pollination. In Java, flowering may occur at any time of year; in Mediterranean climates, it is typically a summer event.
Bulbils and reproduction
After flowering, the inflorescence produces thousands of bulbils (small plantlets, approximately 5 cm in diameter) in the axils of the floral bracts. This is the primary mode of reproduction: Furcraea foetida rarely sets seed and does not produce basal offsets. Each bulbil detaches, falls to the ground and roots rapidly — an extraordinarily efficient dispersal strategy that explains both the ease of propagation and the plant’s invasive potential. A single flowering specimen can populate an area with hundreds of new plants.
Distribution and natural habitat
Native range
The native range of Furcraea foetida is debated, partly because the species was cultivated and transported by indigenous peoples long before European contact. It is generally accepted as native to Costa Rica, northern South America (Venezuela, Colombia, possibly Brazil) and the southern Caribbean islands (from Guadeloupe southward). Its presence in the Greater Antilles is likely the result of pre-Columbian introduction.
Naturalised range
Furcraea foetida is now naturalised across an enormous global range: India, East Africa (Kenya, Tanzania, South Africa, Mpumalanga), the Indian Ocean islands (Madagascar, Comoros, Mauritius, Réunion, Seychelles), Thailand, Western and eastern Australia, Northern New Zealand, New Caledonia, Vanuatu, Tonga, Tuamotu, Hawaii, Florida, the Canary Islands, Madeira, Portugal and Brazil. On many oceanic islands, it has formed dense, impenetrable stands that exclude native vegetation.
Ecology and habitat
In its naturalised range, Furcraea foetida colonises rocky terrain, lava flows, sand, coastal cliffs, gullies, hillsides, disturbed forest and pastures. It tolerates a wide range of soils and light conditions, from full sun to moderately closed forest canopies. High temperatures and semi-humid conditions are optimal. In Mauritius, it occurs in areas with approximately 1,000 mm annual rainfall, mostly concentrated in the wet season.
Cultivation guide
| Hardiness | −2 to −4 °C / 25–28 °F (USDA zones 9b–11) |
| Light | Full sun to partial shade; ‘Mediopicta’ prefers filtered light in hot climates |
| Soil | Well-drained but tolerant; more moisture-tolerant than most agaves |
| Water | Moderate; less water is better in winter |
| Growth rate | Moderate (slow in Mediterranean climates) |
| Flowering | Monocarpic, 7–20 years depending on climate |
Light requirements
Full sun in Mediterranean and warm-temperate climates. In hot subtropical and tropical regions, partial shade or filtered light is preferable — especially for the variegated ‘Mediopicta’, whose cream-coloured tissue is prone to sunburn under intense direct radiation. San Marcos Growers (California) and Everde Growers both recommend some shade in the hottest areas.
Soil and drainage
Good drainage is important but Furcraea foetida is more tolerant of moisture than most agaves. It grows well on rocky terrain, sand, fertile sandy clays and standard garden soil. The extremely mineral substrates favoured for desert agaves are unnecessary. In heavy clay, planting on a raised mound or incorporating coarse aggregate (pumice, perlite) to the top 30 cm improves survival during wet winters.
Watering
Moderate watering during the growing season promotes faster growth and better leaf quality. Allow the soil to dry between waterings. Reduce irrigation sharply in winter, especially in areas that experience frost. Less water is better during the cold months — the combination of wet soil and cold temperatures is the primary cause of death in cultivation.
Cold hardiness
Furcraea foetida has moderate frost tolerance for a furcraea but is distinctly tender compared to agaves. The data from garden reports converges on the following picture:
- Green type: tolerates brief dips to approximately −3 to −4 °C (25–27 °F) with dry soil. A detailed Dave’s Garden article by a Southern California collector states that the species has “moderate cold hardiness into the mid- to high-20s F” and expresses scepticism about claims of survival below −7 °C (20 °F). Another Dave’s Garden contributor reports outright death at −12 °C (10 °F) sustained over four days.
- ‘Mediopicta’: the variegated form is consistently less cold-hardy than the green type, as is standard for variegated cultivars across all succulent genera. The same Dave’s Garden article notes that it is “less hardy than the other Furcraeas being more susceptible to snails and cold.” Expect damage 1–2 °C sooner than the green type.
- Duration matters: a brief overnight dip to −3 °C with quick morning rewarming causes little damage on a dry, well-established plant. The same temperature sustained for 8+ hours, or following rain, can be fatal.
| USDA zone | Growing mode | Winter protection |
|---|---|---|
| 10b–11 | In-ground, no issues | None; be aware of invasive potential |
| 10a | In-ground | Frost cloth for occasional dips below 30 °F |
| 9b | In-ground in sheltered position (green type); container for ‘Mediopicta’ | Frost cloth + dry soil; overhead rain shelter helpful |
| 9a and below | Container only | Overwinter in frost-free, bright location |
Landscape use
Furcraea foetida ‘Mediopicta’ is a first-rate accent plant for subtropical and Mediterranean gardens. Its lack of sharp marginal teeth makes it far safer to plant near walkways and patios than most agaves or the heavily armed Furcraea selloa. The green type is a bold architectural specimen for larger spaces, hillsides and mass plantings. Both forms combine well with palms, tropical foliage plants, ornamental grasses and other agavoids.
Invasiveness warning: In frost-free climates, Furcraea foetida is a documented environmental weed. The IUCN Global Invasive Species Database lists it as a major invasive species in tropical Australia, the Indian Ocean and Oceania. Each flowering specimen can produce thousands of bulbils that disperse by gravity and establish without pollination. Gardeners in sensitive ecological areas should remove inflorescences before bulbils mature and disperse, or avoid planting the species altogether. Responsible management of bulbil production is essential.
Propagation
By bulbils
By far the primary and most efficient method. Collect bulbils from the inflorescence when they show root initials. Pot individually in any well-drained mix. Rooting is rapid at temperatures above 20 °C. A single flowering event can supply hundreds of new plants.
By seed
Seed set is rare, as Furcraea foetida rarely produces viable seed even when flowers are pollinated. This is consistent with the species’ strategy of vegetative reproduction via bulbils. When seed is available, sow at 22–28 °C on a moist, draining mix. Germination occurs in 2–4 weeks.
By offsets
Furcraea foetida does not produce basal offsets (pups) — a key difference from many agaves. Bulbils are the sole vegetative propagation method.
Pests and diseases
Root and crown rot
Caused by Phytophthora, Fusarium and Pythium. The main killer in cultivation outside the tropics. Prevention: excellent drainage, reduced winter irrigation, and avoidance of wet soil during cold weather.
Agave snout weevil
Scyphophorus acupunctatus attacks furcraeas as well as agaves. The larvae bore into the crown and stem, causing sudden collapse. Symptoms: softening of the crown, fermentation odour, white grubs at leaf bases. Preventive systemic insecticides are recommended in areas where the pest is established.
Snails and slugs
A significant issue, especially for ‘Mediopicta’. Multiple Dave’s Garden contributors note that Furcraea foetida is “more susceptible to snails” than other furcraeas. Snails damage young leaves and can disfigure the variegated foliage. Iron phosphate-based baits or physical barriers are effective.
Scale insects and mealybugs
Mealybugs (Pseudococcidae) and armored scales (Diaspididae) colonise leaf bases. More common on container-grown or stressed plants, and under glass. Horticultural oil or insecticidal soap controls moderate infestations.
Frost damage
Frosted leaves become translucent, water-soaked in appearance, then brown and collapse. If only outer leaves are affected, the plant regenerates from the crown. Freezing of the apical meristem is fatal. Keeping soil dry through winter is the single most effective cold-protection measure.
Furcraea foetida and the fibre economy: Mauritius hemp
Furcraea foetida is the source of Mauritius hemp, a natural fibre introduced to the island of Mauritius by Dutch colonists in the 17th century and subsequently cultivated commercially in East Africa, India, Sri Lanka and South-East Asia. In the 1950s, Mauritius had approximately 7,000 hectares under Furcraea foetida cultivation, producing around 1,000 tonnes of fibre annually, mainly used locally for manufacturing sugar sacking.
The fibre is extracted from fresh leaves by retting (soaking and mechanical scraping). It is longer, finer, softer and whiter than sisal fibre (Agave sisalana), but not as strong. The fibre content of fresh leaves is 2.0–2.5 %, lower than sisal. The fibres are resistant to salt water, strong and biodegradable. Production has declined sharply since the mid-20th century due to competition from synthetic materials, but the fibre retains niche relevance for eco-friendly packaging, handicrafts and traditional textiles.
The sap of Furcraea foetida contains steroidal saponins (notably furcreastatin, described by Itabashi et al. in 2000) and is toxic to fish, guinea pigs and rabbits. It is also a skin irritant — gardeners should wear gloves when handling cut leaves.
Comparison with similar species
| Character | Furcraea foetida | Furcraea selloa | Furcraea tuberosa |
|---|---|---|---|
| Leaf margins | Smooth or few prickles at base only | Heavily armed with hooked teeth | Armed with stout teeth |
| Stem | Stemless or very short | Develops trunk to 3 m | Stemless or short |
| Leaf colour | Deep green (type); cream-striped (‘Mediopicta’) | Green with cream margins (‘Marginata’) | Green |
| Roots | Fibrous | Fibrous | Tuberous (distinctive) |
| Cold hardiness | −2 to −4 °C | −3 to −5 °C | −2 to −3 °C |
| Invasive potential | High — documented global weed | Moderate — naturalised in Australia, South Africa, Florida | Low-moderate |
| Distribution | Caribbean, N. South America; pantropical weed | Colombia to Ecuador | Widespread Caribbean |
References
CABI (2026). Furcraea foetida (Mauritius hemp). CABI Compendium. doi:10.1079/cabicompendium.114444.
García-Mendoza, A.J. (2000). Revisión taxonómica de las especies arborescentes de Furcraea (Agavaceae) en México y Guatemala. Boletín de la Sociedad Botánica de México, 66, 113–129.
Itabashi, M. et al. (2000). A new bioactive steroidal saponin, furcreastatin, from the plant Furcraea foetida. Carbohydrate Research, 323(1–4), 57–62.
IUCN Global Invasive Species Database (2026). Species profile: Furcraea foetida. https://www.iucngisd.org/gisd/species.php?sc=1257.
Verloove, F. et al. (2019). A synopsis of feral Agave and Furcraea (Agavaceae, Asparagaceae s.lat.) in the Canary Islands (Spain). Plant Ecology and Evolution, 152, 470–498.