Plant resistant to cold and frost
Strawberry Tree Seeds (Arbutus Unedo) 1.75 - 1
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Strawberry Tree Seeds (Arbutus Unedo)


Strawberry Tree Seeds (Arbutus Unedo)

Price for Package of 10 seeds.

A small, evergreen tree with Lily-of-the-valley type flowers, followed by attractive, vaguely strawberry-like, edible fruits. One of the few members of the erica family that

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Strawberry Tree Seeds (Arbutus Unedo)

Price for Package of 10 seeds.

Arbutus unedo, the strawberry tree, is an evergreen shrub or small tree in the family Ericaceae, native to the Mediterranean region and western Europe north to western France and Ireland. Due to its presence in southwest and northwest Ireland, it is known as either "Irish strawberry tree", or cain or cane apple (from the Irish name for the tree, caithne[2]), or sometimes Killarney strawberry tree.

Despite the name, it is not the source of the common strawberry, which is obtained from Fragaria × ananassa, an unrelated plant.


Arbutus unedo was one of the many species described by Carl Linnaeus in Volume One of his landmark 1753 work Species Plantarum, giving it the name it still bears today.

A study published in 2001 which analyzed ribosomal DNA from Arbutus and related genera found Arbutus to be paraphyletic, and A. unedo to be closely related to the other Mediterranean Basin species such as A. andrachne and A. canariensis and not to the western North American members of the genus.

Arbutus unedo and A. andrachne hybridise naturally where their ranges overlap; the hybrid has been named Arbutus × andrachnoides (syn. A. × hybrida, or A. andrachne × unedo), inheriting traits of both parent species, though fruits are not usually borne freely, and as a hybrid is unlikely to breed true from seed. It is sold in California as Arbutus x Marina named for a district in San Francisco where it was hybridized.


Arbutus unedo fruit
ripe and unripe fruits and flowers
Arbutus tree near Bayda in Libya

Arbutus unedo grows to 5–10 m (16–33 ft) tall, rarely up to 15 m (49 ft), with a trunk diameter of up to 80 cm (31 in). It grows in hardiness zones 7–10.

The leaves are dark green and glossy, 5–10 cm (2–4 in) long and 2–3 cm (0.79–1.18 in) broad, with a serrated margin.

The hermaphrodite flowers are white (rarely pale pink), bell-shaped, 4–6 mm (0.16–0.24 in) diameter, produced panicles of 10–30 together in autumn. They are pollinated by bees, and have a mild sweet scent.

The fruit is a red berry, 1–2 cm (0.39–0.79 in) diameter, with a rough surface. It matures in about 12 months, in autumn, at the same time as the next flowering. It is edible; the fruit is sweet when reddish. Seeds are often dispersed by frugivorous birds

The name unedo is attributed to Pliny the Elder, who allegedly claimed that "unum tantum edo", meaning "I eat only one". It is not known whether he meant that the fruit was so good he could eat only one, or whether he meant that the fruit was uninteresting so he ate only one.


Arbutus unedo is widespread in the Mediterranean region: in Portugal, Spain and southeastern France; southward in Algeria, Morocco, Libya, and Tunisia, and eastward in Italy, Slovenia, Croatia, Greece, Turkey, Lebanon, Syria and Israel. It is also found in western France, Albania, Bulgaria and southwestern Ireland.

Its disjunct distribution, with an isolated relict population in southwestern and northwestern Ireland, notably in Killarney and around Lough Gill in County Sligo, which is its most northerly stand in the world, is a remnant of former broader distribution during the milder climate of the Atlantic period, the warmest and moistest Blytt-Sernander period, when the climate was generally warmer than today. The red-flowered variant, named A. unedo rubra by William Aiton in 1785, was discovered growing wild in Ireland in 1835.


Arbutus unedo is quite an easy plant to cultivate, and is adaptable to many climates. Once established it is fairly drought resistant, frost resistant, shade tolerant and salt tolerant.

Lower production of fruit mass has however been reported in case of summer droughts, and frosts in flowering time was seen to decrease the numbers of fruits.

Arbutus unedo is naturally adapted to dry summer climates, and has become a very popular ornamental plant in California and the rest of the west coast of North America. It can grow easily in USDA hardiness zone 7 or warmer.

It also grows well in the cool, wet summers of western Ireland and England, and temperate regions of Europe and Asia. Pests include scales and thrips, and diseases include anthracnose, Phytophthora, root rot, and rust.[citation needed]

Unlike most of the Ericaceae, A. unedo grows well in basic (limy) pH soils, even though it does better in more acidic soils.

The fruit production is not very high and is highly variable on the weather, and that may be part of the reason this plant is not much cultivated. The average yield in a two years study is around 46 kg per hectare, and 180 grams per cubic metre of crown.[12] However, very little work has so far been done in terms of genotype selection.

Arbutus unedo has been seen to form a mycorrhizal relationship. Inoculation with Pisolithus tinctorius has shown to greatly improve the plants root mass, size, tolerance to drought and nutritional status.[14][15]

In cultivation in the UK, the form A. unedo f. rubra[16] and the cultivar ‘Atlantic’[17] have gained the Royal Horticultural Society’s Award of Garden Merit


Propagation can be done via seed, layering, or cutting.

The seed should undergo a one month cold stratification period, then soaked for 5 to 6 days in warm water to improve germination success. Seedlings are prone to damp, and should be cared in the first year.

Germination rate is low, rarely over 20%.

Layering can take up to two years, but has a good success rate, while cutting is done with a 15–20 cm (5.9–7.9 in) long mature wood, preferably with a heel in November to December. The success rate however is not very high.[20]


Culinary uses

Arbutus unedo crumble cake
Bowl of strawberry fruits

Arbutus unedo's fruits have a high content of sugars (40%), and antioxidant vitamins such as vitamin C, beta-carotene, niacin, tocopherols, and organic acids that are precursors to omega-3 and omega-6 fatty acids (nearly 9%).[21][22] They are edible fresh, but that is an uncommon consumption, especially because the mature fruit tends to bruise very easily, making transportation difficult.

They are used mostly for jam, marmalades, yogurt and alcoholic beverages,[23][24] such as the Portuguese medronho, a type of strong brandy. Many regions of Albania prepare the traditional drink rakia from the fruits of the plant (mare or kocimare in Albanian), hence comes the name of the drink "raki kocimareje". In order to reduce the high content of methanol in the drink, the spirit is distilled twice.

The flowers are pollinated by bees, and the resulting honey is bitter tasting but still considered a delicacy.

Herbal medicine

Arbutus unedo's leaves have been employed in traditional and folk medicine in the form of a decoction having the following properties: astringent, diuretic, urinary anti-septic, antiseptic, intoxicant, rheumatism, tonic, and more recently, in the therapy of hypertension and diabetes.

The leaves are reported to have a high concentration of flavonol antioxidants, especially quercitin, best extracted with a decoction, and together with the fruits are a source of antioxidants.

The leaves also have anti-inflammatory properties[31][non-primary source needed]

Ecological design

In landscape design, ecosystem restoration or permaculture based designs, A. unedo can have many purposes. While the ornamental one is the most common, this can be a valuable plant also for restoring degraded ecosystems and preventing desertification. Being a pioneer plant and growing well also in poor soils, can be used in a wide array of situations.

  • The flowers are a significant source of nectar and pollen for bees, while the fruits are food for the birds.
  • Its salt tolerance, coupled with it being an evergreen, make it a good choice for wind barriers in lands close to the sea.
  • A. unedo is fire resistant (can regrow after a fire), and being a pioneer plant can contribute to the discontinuity of fire-prone pines and eucalyptus monocultures;[32] for the same reasons it is a good candidate for reforestation in Mediterranean areas.[33]
  • The dense foliage throughout the year can be a shelter for insects and small animals during the winter.
  • Its extensive root system can help in the soil stabilization process.[34]

Other uses

  • The wood is quite hard and well suited for a various uses such as fire wood and to make pipes. Since it doesn't usually grow straight, it is not well suited for construction or similar uses.
  • The tree is also grown as an ornamental plant, because of the nice looking and smelling of the flowers and the fruit, the interesting presence at the same time of fruits and flowers on the plant and because it is an evergreen. It is used as a single or multi-trunked ornamental tree, and as a specimen or hedge shrub in gardens and public landscapes.


Arbutus unedo: habit

Its Mediterranean habitat, elegant details of leaf and habit and dramatic show of fruit with flowers made Arbutus unedo notable in Classical Antiquity, when it was called Andrachne, and for which Theophrastos (4th c. BCE) wrote about it, as well as the ancient army medical herbalogist Pedanios Dioscorides [De Materia Medica, Book II-150]; in addition, Pliny thought it should not be planted where bees are kept, for the bitterness it imparts to honey.

The first signs of its importation into northern European gardens was to 16th-century England from Ireland. In 1586 a correspondent in Ireland sent plants to the Elizabethan courtiers Lord Leicester and Sir Francis Walsingham.[35] An earlier description by Rev. William Turner (The Names of Herbes, 1548) was probably based on hearsay. The Irish association of Arbutus in English gardens is reflected in the inventory taken in 1649 of Henrietta Maria's Wimbledon: "one very fayre tree, called the Irish arbutis standing in the midle parte of the sayd kitchin garden, very lovely to look upon"[35] By the 18th century Arbutus unedo was well known enough in English gardens for Batty Langley to make the bold and impractical suggestion that it might be used for hedges, though it "will not admit of being clipped as other evergreens are."

In the United States, Thomas Jefferson lists the plant in his Monticello gardens in 1778.

The form A. unedo f. rubra and the hybrid A. × andrachnoides,[38] have gained the Royal Horticultural Society's Award of Garden Merit.

Symbolic uses

Central panel of The Garden of Earthly Delights by Hieronymus Bosch, described by José de Sigüenza as "The Picture of the Strawberry Tree".

The Garden of Earthly Delights, a painting by Hieronymus Bosch, was originally listed by José de Sigüenza, in the inventory of the Spanish Crown as La Pintura del Madroño – "The Painting of the Strawberry Tree".[39]

The tree makes up part of the Coat of arms of Madrid (El oso y el madroño, The Bear and the Strawberry Tree) of the city of Madrid, Spain. In the center of the city (Puerta del Sol) there is a statue of a bear eating the fruit of the Madroño tree. The image appears on city crests, taxi cabs, man-hole covers, and other city infrastructure. The fruit of the Madroñotree ferments on the tree if left to ripen, so some of the bears become drunk from eating the fruits.[citation needed]

A bear and a madroño(strawberry tree) are the symbol of Madrid
Statue of the Bear and the Strawberry Tree, Madrid

The tree is mentioned by Roman poet Ovid, in Book I: 89–112 "The Golden Age" of his Metamorphoses: "Contented with food that grew without cultivation, they collected mountain strawberries and the fruit of the strawberry tree, wild cherries, blackberries clinging to the tough brambles, and acorns fallen from Jupiter’s spreading oak-tree."[40]

The name of the Italian promontory Mount Conero, situated directly south of the port of Ancona on the Adriatic Sea, derives from the Greek name κόμαρος (komaròs) indicating the strawberry tree which is common on the slopes of the mountain.[41] Mount Conero, the only coastal high point on the Adriatic sea between Trieste and the Gargano massif in the region of Apulia, assists navigators to sail across the Adriatic sea since ancient times.

Mount Conero, whose name is derived from the Greek κόμαρος (komaròs) and indicates the strawberry tree which is common on the slopes of the mountain.

The poet Giovanni Pascoli dedicated a poem to the strawberry tree. He refers to the Aeneid passage in which Pallas, killed by Turnus, was posed on branches of a strawberry tree. He saw in the colours of that plant a prefiguration of the flag of Italy and considered Pallas the first national cause martyr.[43] Pascoli's ode says:

(in Italian)

O verde albero italico, il tuo maggio

è nella bruma: s'anche tutto muora,

tu il giovanile gonfalon selvaggio

spieghi alla bora

Oh green Italian tree, your May month

is in the mist: if everything die,

you, the youthful wild banner

unfold to the northern wind

In the Italian Risorgimento the strawberry tree, because of its autumnal colours, the same colours of the Italian flag, at the same time red for fruits and white for flowers, beyond the green colour of leaves, was considered, indeed, a symbol of the flag.

Source: Wikipedia Arbutus unedo, the Strawberry Tree

Sowing Instructions






1-2 months in moist soil at 2-5 ° C in a refrigerator 

Sowing Time:

all year round> Autumn / Winter preferred

Sowing Depth:

Cover lightly with substrate

Sowing Mix:

Coir or sowing mix + sand or perlite

Germination temperature:

18-20 ° C


bright + keep constantly moist not wet

Germination Time:

until it germinates 


Water regularly during the growing season


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Data sheet

Handpicked seeds ?
Handpicked seeds
Organic Seeds ?
Organic Seeds
Pretreatment of sowing ?
Stratification needed: Yes
Life Cycle:
Perennial plant : Yes
Resistant to cold and frost ?
Resistant to cold and frost : - 50° C