Chamaerops humilis, the European fan palm

Chamaerops humilis, the European fan palm or Mediterranean dwarf palm, is a low, clump-forming fan palm that grows wild around the western and central Mediterranean, from Portugal, Spain and southern France to Italy and its islands, and across North Africa from Morocco to Libya. It is the only species of the Genus Chamaerops and one of only two palms native to Europe, alongside the Cretan date palm (Phoenix theophrasti). Tough, drought-tolerant and among the most cold-resistant palms in cultivation, it is grown in gardens and containers from the Mediterranean to the British Isles, North America and New Zealand. It has also been published as Phoenix humilis and Corypha humilis, two names now treated as synonyms.

Key facts about Chamaerops humilis

  • Accepted name (POWO): Chamaerops humilis L. (1753)
  • Former names and common synonyms: Phoenix humilis (L.) Cav., Corypha humilis (L.) Pynaert; for the silver form, Chamaerops argentea Paxton & Lindl., Chamaerops humilis var. cerifera Becc. and Chamaerops humilis subsp. cerifera (Becc.) Giovino & Domina
  • Family: Arecaceae (palm family)
  • Common names: European fan palm, Mediterranean fan palm, Mediterranean dwarf palm, dwarf fan palm
  • Natural distribution: western and central Mediterranean: Portugal, Spain, Balearic Islands, France, Italy, Sardinia, Sicily, Morocco, Algeria, Tunisia, Libya (POWO)
  • IUCN status: Least Concern (global assessment, 2017)
  • CITES and other protection: not listed in any CITES appendix according to the sources consulted (see Conservation)
  • Documented hardiness: established plants in the ground commonly take −9 to −12 °C with leaf damage; survival of brief dips to about −15/−16 °C is reported; USDA zones 8 to 11 (see Cold hardiness)
  • Exposure and soil: full sun to light shade, very well-drained soil
  • Habit and mature size: clumping palm, usually 1.5–2.5 m in gardens, stems slowly reaching 2–5 m and 20–25 cm across
  • Toxicity: no toxicity documented; spiny petioles (see Toxicity and precautions)

How to recognise Chamaerops humilis?

Chamaerops humilis is easy to spot: it is a shrubby, many-stemmed fan palm whose leaf stalks carry rows of stiff, straight spines. No other palm commonly planted in temperate gardens combines a clumping habit, small deeply split fans and such heavily armed petioles.

  • Habit: several stems arise from a single base and form a dense, rounded clump; a plant can carry eight to ten trunks, but it can be trained to a single stem by removing suckers. Stems grow slowly, often leaning, and eventually reach 2–5 m with a diameter of 20–25 cm. Near the top they are clothed in dark fibres and old leaf bases.
  • Leaves: palmate (fan-shaped), up to about 60 cm long and as wide, divided almost to the base into 10–20 narrow, stiff segments; colour ranges from green to grey-green or glaucous blue.
  • Petioles: long and very spiny, with straight, yellowish spines 2–3 cm long.
  • Flowers: small and yellow, in short inflorescences borne among the leaf bases, close to the stem. The plants are usually, but not always, dioecious: male and female flowers are normally borne on separate individuals.
  • Fruits: bright green when young, turning dull yellow to brown as they ripen in autumn (September to November in the native range).

Leaf colour is the most variable character. Populations from the Atlas mountains of Morocco carry a heavy waxy bloom that makes their fans silver-blue: they form Chamaerops humilis var. argentea, treated on its own page.

Hybrids

No natural or artificial hybrid involving Chamaerops humilis is documented in the sources consulted. Crosses with Trachycarpus fortunei are occasionally discussed by hobbyists, but no published, verified record of such a hybrid was found. Plants sold as “hybrids” are best regarded as unverified until their parentage is documented.

Possible confusions

The palm most often confused with Chamaerops humilis is the Chinese windmill palm, Trachycarpus fortunei. Both are hardy fan palms planted side by side in temperate gardens, and the Chinese species was long sold under names such as Chamaerops fortunei Hook. and Chamaerops excelsa hort. The differences are nevertheless clear:

  • Trachycarpus fortunei normally grows a single, tall trunk wrapped in brown fibre, whereas Chamaerops humilis forms a low clump of several stems;
  • the petioles of Trachycarpus fortunei are only finely toothed, while those of Chamaerops humilis bear long, conspicuous spines, a feature visible even on seedlings;
  • the leaves of Chamaerops humilis are smaller and stiffer.

A second trap is nomenclatural: Chamaerops excelsa Thunb. is a synonym of the lady palm, Rhapis excelsa, not of Trachycarpus fortunei. Old labels bearing “Chamaerops” therefore do not always designate the European fan palm. Among American palms, the saw palmetto (Serenoa repens) has a comparable shrubby habit and toothed petioles, but it is native to the south-eastern United States and is rarely grown in Europe.

Taxonomy

Chamaerops humilis is the accepted name, and the species has not changed genus since Linnaeus described it in 1753. The synonyms Phoenix humilis (L.) Cav. and Corypha humilis (L.) Pynaert are homotypic: they are based on the same Linnaean type and simply reflect attempts, now abandoned, to place the plant in other genera. No transfer to another genus has been adopted, and Chamaerops remains a genus with a single species within the family Arecaceae.

Below the species level, POWO currently accepts two varieties: Chamaerops humilis var. humilis, the widespread green- to grey-leaved form, and Chamaerops humilis var. argentea (Anon.) André, the silver-leaved form restricted to Morocco. The latter absorbs as synonyms Chamaerops argentea Paxton & Lindl., Chamaerops humilis var. cerifera Becc. and the more recent Chamaerops humilis subsp. cerifera (Becc.) Giovino & Domina.

That subspecies was proposed after a study by Giovino, Marchese and Domina published in Caryologia (2020). The authors grew plants from wild-collected seed of seven populations across the Mediterranean under identical conditions and compared their morphology and ten microsatellite (SSR) markers. Two clearly separated groups emerged: lowland populations, and populations growing above about 1,000 m in the High Atlas and Anti-Atlas of Morocco, which they proposed to treat as a distinct subspecies. POWO has not followed this rank and keeps the high-altitude plants as a variety. For the gardener, the practical consequence is simple: “cerifera”, “argentea” and “subsp. cerifera” on a label all point to the same blue Moroccan palm.

Other varietal names still circulate on specialist sites and in the trade; only the two varieties above are accepted by POWO. Cultivars also exist, the best known being ‘Vulcano’ (see Cultivation).

Etymology and history

Both parts of the name describe a low plant. Chamaerops combines the Greek chamai, “low” or “on the ground”, with rhops, “shrub”, while the Latin epithet humilis also means “low”. Linnaeus published the species in Species Plantarum (volume 2, page 1187) on 1 May 1753. The type locality and the original material were not consulted for this page.

The species has a remarkable place in the history of botany. The oldest plant in the Botanical Garden of Padua, Italy, founded in 1545, is a Chamaerops humilis planted in 1585 and known as “Goethe’s palm”. Johann Wolfgang von Goethe visited the garden in 1786, and his observations of the succession of leaf forms on this palm fed into his essay on the metamorphosis of plants. Kept in a dedicated octagonal glasshouse, the plant has produced several stems reported to reach about 10 m, far more than the species usually attains in the wild.

No reliable source was found giving the date when the species first entered cultivation outside its native range; its presence in European gardens since at least the sixteenth century is shown by the Padua specimen.

Common names

In English, the species is most often called European fan palm, Mediterranean fan palm, Mediterranean dwarf palm or dwarf fan palm; all four names appear in botanical gardens’ and horticultural databases. They refer to the species as a whole, including the silver Moroccan variety.

Within its native range, names attested in the sources consulted include:

  • Spanish: palmito, palma de escobas (“broom palm”);
  • Catalan: margalló, garballó;
  • French: palmier nain, palmier doum, faux-doum;
  • Italian: palma nana;
  • Arabic (Morocco): doum; Tamazight: iyzedam.

Two ambiguities deserve a warning. “Doum” is also the usual name of an unrelated African palm, Hyphaene thebaica, the doum palm of the Nile valley. In Spanish, “palmito” designates the plant but also the edible palm heart, whatever the species it comes from.

In the wild

Chamaerops humilis is a plant of sunny coastal shrublands in the western and central Mediterranean. POWO records it in Portugal, Spain, the Balearic Islands, France, Italy, Sardinia, Sicily, Morocco, Algeria, Tunisia and Libya. In Europe it occurs mainly along the southern coasts of the Iberian Peninsula; in Italy its range is today fragmented, confined to Sicily, Sardinia and a few wild coastal sites from Liguria to Campania. Morocco holds the largest populations, from the coast up to the High Atlas, where Chamaerops humilis var. argentea grows at up to about 2,000 m.

Two ecological traits explain its success in dry, fire-prone landscapes. First, it resprouts very quickly after fire: the apical bud of each stem is protected by the dense leaf bases, and the plant also produces basal suckers from an underground rhizome. It often flowers soon after a fire, together with its first new leaves, and tolerates repeated burning. Second, its pollination is unusual. The only known pollinator is a small weevil, Derelomus chamaeropsis, which lives in a nursery mutualism with the palm: the insects shelter, feed and lay their eggs in the inflorescences, usually staying on the same plant throughout flowering. Research by Dufaÿ and colleagues showed that the scent attracting the weevils is emitted by the leaves, not the flowers, and that its composition varies with time and between male and female plants.

Dense stands of dwarf palm help hold soils against erosion and offer shelter and food to many animals.

Conservation status and regulations

Chamaerops humilis is not threatened at a global scale: the IUCN Red List classes it as Least Concern, following an assessment by Gardiner and Véla published in 2017. Populations are declining in parts of the range because of urbanisation, but not to a degree that meets the thresholds of a threatened category.

No CITES listing was found for the species or its varieties. Local threats exist nonetheless: two invasive palm pests, the palm moth Paysandisia archon and the red palm weevil Rhynchophorus ferrugineus, have been recorded on wild plants, the latter on natural stands in Sicily (see Pests and diseases). Harvesting of palm hearts and leaves for crafts is a traditional activity in parts of the range; its current impact on wild populations could not be quantified from the sources consulted.

The plants offered in the trade are overwhelmingly nursery-raised from seed. Buyers should prefer nursery-grown stock and check the regional or national rules that may protect wild populations in some countries. Databases were consulted on 30 September 2026; regulations change, so current status should be verified with the relevant authorities.

Cultivation

Chamaerops humilis is one of the easiest palms to grow outside the tropics: it needs sun, excellent drainage and patience, since growth is slow. It is widely planted in Mediterranean-climate regions, western Europe, the milder parts of the United States, Australia and New Zealand, and it holds the Award of Garden Merit of the Royal Horticultural Society (RHS).

Outdoor / In-ground cultivation

In the ground, the species performs best in full sun, in a free-draining soil. It tolerates poor, stony ground, salt-laden winds and drought once established, and it copes with some shade, although plants grown in too much shade lose their compact habit. In regions with hot, dry summers it is essentially self-sufficient; elsewhere, summer watering and a nitrogen-rich feed accelerate growth. In cool, wet climates, the drier the soil in winter, the better the plant withstands cold.

Documented garden results show how widely it can be grown:

  • Mediterranean Basin: native across much of the western and central basin; its drought tolerance once established makes it well suited to summer-dry gardens.
  • Atlantic Europe: in Britain it is described as the easiest palm to grow after Trachycarpus fortunei, hardy to at least −12 °C in a warm, sunny, well-drained position, ideally out of the wind.
  • North America: cultivated along the West Coast from southern California to the Pacific Northwest, where it is a fixture of older Portland gardens, along the East Coast from Georgia to Maryland, and in parts of the dry south-west.
  • Southern Hemisphere: grown in several parts of Australia and in New Zealand, where the Dunedin Botanic Garden notes it as one of the few palms able to survive local winters, salt winds, poor soil and frost.

Clumps can be left to develop naturally or thinned to reveal a few curved trunks; removing all suckers produces a single-stemmed specimen. Wear thick gloves when pruning: the petiole spines are sharp. After a frost, growers advise leaving damaged leaves in place until all risk of cold has passed, then removing only the dead ones.

Among cultivars, ‘Vulcano’ is the most widely sold. According to a descriptive paper (PalmArbor) hosted by the University of California Agriculture and Natural Resources, it arose as a variant at a nursery in Sicily and was named after the nearby island of Vulcano in the Aeolian archipelago; whether it came from wild plants on the island or from cultivated stock could not be established. It forms compact clumps up to about 2 m tall and wide, with stiffer leaves, silvery underneath.

Container cultivation

Slow growth and a tolerance of cool conditions make Chamaerops humilis a good long-term container plant, for terraces in mild climates and for cold regions where it must be sheltered in winter. Use a large, deep pot with drainage holes and a sharply draining mix; the RHS recommends a loam-based compost for plants grown under glass or indoors. Let the upper part of the compost dry between waterings, and water sparingly in winter.

Container plants are more exposed to cold than plants in the ground, because the root ball freezes much faster; horticultural sources note that the species does not survive freezing of its root system and tolerates repeated frosts over several days poorly. In regions colder than USDA zone 8, bring pots into a bright, frost-free place for the winter. A cool rest at around 10–15 °C suits it well. Indoors, it needs very bright light with some direct sun: in too much shade it becomes lax and spindly. Outdoors in summer, acclimatise it gradually to full sun to avoid scorching leaves that have grown under glass.

Propagation

Seed is the normal method of propagation; division is possible but often fails. Fresh seed germinates in about two to three months, sometimes up to 100 days, provided it is kept warm: sowing temperatures of 22–24 °C or more are recommended. Soaking the seed before sowing, lightly abrading the seed coat or a period of warm, moist stratification can speed up and even out germination. Remember that the species is usually dioecious: a female plant will set fertile seed only if a male plant flowers nearby and the pollinating weevil, or hand pollination, transfers the pollen.

Suckers can be detached from established clumps in late spring, keeping as many roots as possible, but the success rate reported by growers is low.

Pests and diseases

The most serious threats to Chamaerops humilis are two invasive boring insects introduced into Europe. The palm moth Paysandisia archon, of South American origin, is listed among its known host plants, and its larvae tunnel into the stems and the crown. The red palm weevil Rhynchophorus ferrugineus has been recorded attacking natural stands of dwarf palm in Sicily. Together, these two pests have killed more than 100,000 palms in Europe since their introduction. Where these pests are regulated, suspected infestations should be reported to the local plant-health services.

Other problems are documented:

  • Phytophthora nicotianae: first reported on the species in 2009 in a nursery in eastern Sicily, where about 40% of some 30,000 three-year-old potted blue Mediterranean fan palms wilted, with rot of the petiole base, blight of the spear leaf and root rot;
  • false smut (Graphiola), a leaf spot favoured by high humidity and poor air circulation;
  • bud rot, listed among the diseases of the species (causal agent not specified in the sources consulted);
  • under glass and indoors, red spider mite, thrips and scale insects, according to the RHS.

Cold hardiness

Chamaerops humilis is one of the hardiest palms: established plants in the ground usually survive −9 to −12 °C (USDA zone 8), with leaf damage, and survival after brief dips to about −15/−16 °C is reported. Horticultural references generally place it in USDA zones 8 to 11; the RHS rates it H4 (hardy to about −10 °C). These figures depend heavily on the plant’s age, soil drainage, the duration of the cold and whether it is wet or dry.

Documented growers’ reports give a more nuanced picture:

  • Palmtalk, south Mississippi (USA, Gulf Coast), January 2024: three clumps in the ground, the largest about 1.8 m tall, experienced −9.4 °C (15 °F) during a hard freeze. Lower leaves turned brown and about a third of the upper leaves were scorched; the crowns were not reported lost.
  • Palmtalk, Texas (USA, zone 8a): a plant in the ground exposed to −13 °C (8 °F) had its lower leaves burnt, without damage to the crown or trunk (year not specified in the search results).
  • Palmtalk, unspecified locations: plants fully defoliated after −12.8 °C (9 °F) in one winter, but usually holding their leaves down to about −9.4 °C (15 °F); prolonged periods around −11 to −12 °C can cause defoliation and spear pull. Other members report survival after −16 °C (3 °F) with many frost days, with regrowth after being frozen back.
  • Pacific Northwest (USA/Canada): a plant in North Vancouver survived −9 °C with only an umbrella over it (UBC Botanical Garden forum), while burnt specimens were seen around Seattle after a winter considered not particularly severe; a Portland nursery (Cistus Nursery) advises covering plants at about −9.4 °C (15 °F).
  • Britain (Atlantic climate): hardy to at least −12 °C in a sunny, well-drained position; an overhead shelter has helped plants through the worst winters.

These reports concern established plants in the ground; young plants and container-grown specimens are more fragile. Two points recur in all climates: wet soil in winter considerably reduces hardiness, and a severely damaged plant can regrow from its base or from the protected apical buds, so it should not be removed too quickly after a hard winter. The silver Moroccan variety, from high altitudes, is reputed to be at least as hardy as the typical form; see Chamaerops humilis var. argentea.

Toxicity and precautions

No toxicity to humans or domestic animals is documented for Chamaerops humilis: the species does not appear on the ASPCA list of plants toxic to dogs and cats, and horticultural sources report no toxic effects. This absence of data is not proof of safety: no study on the fruits was found, so they should not be eaten, and the traditional consumption of the palm heart (see Traditional uses) does not mean that other parts are edible.

The main hazard is mechanical: the long, sharp petiole spines can cause deep scratches and punctures, so gloves, long sleeves and eye protection are recommended when pruning or handling the plant, and it is best kept away from paths and play areas. In case of ingestion or an injury that becomes infected, consult a doctor, a poison control centre or a veterinarian.

Traditional uses

In North Africa and southern Europe, Chamaerops humilis has long been a useful plant. The leaves and their fibres are made into mats, brooms, ropes and baskets: in Morocco, the “doum” baskets are an important source of income, a market that grew after the national ban on plastic bags. For finer basketry, young unopened leaves are treated with sulphur to soften them.

The tender heart of the stem, off-white with a sweet taste compared to artichoke, and young buds are eaten as a vegetable, notably in Morocco and southern Spain; its sale is a source of revenue in rural Morocco. In Moroccan traditional medicine, leaves, fruits and palm heart are mainly prepared as decoctions against digestive disorders, diabetes and urinary infections. These are ethnobotanical records, not validated medical uses.

Frequently asked questions

How cold can a European fan palm tolerate?

It depends on the plant and the winter. Established plants in the ground generally survive −9 to −12 °C with leaf damage, and some have regrown after brief dips to about −15/−16 °C. Wet soil, long frosts and young age all reduce this tolerance, and container plants are more vulnerable.

Is Chamaerops humilis toxic to dogs and cats?

No toxicity is documented. The species is not on the ASPCA list of toxic plants, unlike the sago palm (Cycas revoluta), which is not a true palm and is highly toxic. The spiny petioles can, however, injure a curious pet.

How fast does it grow and how big does it get?

Slowly. In gardens it usually reaches 1.5–2.5 m in height and 1–1.5 m in spread, while old stems can reach 2–5 m. It is long-lived: some specimens are believed to be over 100 years old, and the Padua palm was planted in 1585.

Can I grow a European fan palm in a pot or indoors?

Yes, provided it gets plenty of light. It makes a good container plant in a deep, free-draining pot, and it can spend the winter indoors or in a cool glasshouse. In low light it loses its compact habit.

What is the difference between Chamaerops humilis and Trachycarpus fortunei?

They belong to two different genera. Chamaerops humilis forms a low clump of several stems with strongly spiny petioles, whereas Trachycarpus fortunei, from Asia, grows a single tall trunk with finely toothed petioles. The confusion comes partly from old names such as Chamaerops fortunei once used for the Chinese palm.

Should I remove the suckers?

Only if you want a single trunk. Left alone, the plant naturally forms a multi-stemmed clump; regular removal of suckers produces a single-stemmed specimen. Division of suckers to obtain new plants often fails.

Is the blue “cerifera” palm a different species?

No. POWO treats it as a variety of the same species, Chamaerops humilis var. argentea, with “cerifera” as a synonym. A 2020 genetic study proposed ranking it as a subspecies, but this has not been adopted by POWO.

Further reading on Succulentes

Reference sites

Bibliography

  • Linnaeus, C. (1753). Species Plantarum 2: 1187. Laurentius Salvius, Stockholm. [Protologue of Chamaerops humilis; reference taken from IPNI and POWO, original text not consulted.]
  • Giovino, A., Marchese, A. & Domina, G. (2020). Morphological and genetic variation of Chamaerops humilis (Arecaceae) in relation to the altitude. Caryologia 73. [Peer-reviewed article; basis of Chamaerops humilis subsp. cerifera, a rank not adopted by POWO. Volume page reference 73: 91 as cited by POWO.]
  • Dufaÿ, M., Anstett, M.-C. & Hossaert-McKey, M. (2003). When leaves act like flowers: how dwarf palms attract their pollinators. Ecology Letters 6: 28–34. [Peer-reviewed article; leaf-produced scent attracting the pollinator.]
  • Dufaÿ, M., Hossaert-McKey, M. & Anstett, M.-C. (2004). Temporal and sexual variation of leaf-produced pollinator-attracting odours in the dwarf palm. Oecologia 139: 392–398. [Peer-reviewed article.]
  • Dufaÿ, M. & Anstett, M.-C. (2004). Cheating is not always punished: killer female plants and pollination by deceit in the dwarf palm Chamaerops humilis. Journal of Evolutionary Biology 17: 862–868. [Peer-reviewed article; nursery pollination with Derelomus chamaeropsis.]
  • Faedda, R., Pane, A., Granata, G. & Magnano di San Lio, G. (2011). First report of Phytophthora nicotianae as pathogen of blue Mediterranean fan palm. New Disease Reports 23: 3. doi:10.5197/j.2044-0588.2011.023.003 [Peer-reviewed short report; section Pests and diseases.]
  • Gardiner, L.M. & Véla, E. (2017). Chamaerops humilis. The IUCN Red List of Threatened Species. [Global assessment: Least Concern; cited via secondary sources, Red List page not consulted directly.]