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Ceratonia - L.

Common Name Carob, St. john's bread
Family Fabaceae or Leguminosae
USDA hardiness 9-11
Known Hazards None known
Habitats Rocky places near the sea shore[89].
Range S. Europe.
Edibility Rating    (3 of 5)
Other Uses    (2 of 5)
Weed Potential No
Medicinal Rating    (2 of 5)
Care (info)
Frost Hardy Well drained soil Moist Soil Full sun
Ceratonia Carob, St. john


http://commons.wikimedia.org/wiki/File:Illustration_Ceratonia_siliqua0.jpg
Ceratonia Carob, St. john
http://commons.wikimedia.org/wiki/User:Helix84

 

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Summary

Bloom Color: Green. Form: Rounded, Vase.


Physical Characteristics

 icon of manicon of cone
Ceratonia is an evergreen Tree growing to 15 m (49ft 3in) at a medium rate.
See above for USDA hardiness. It is hardy to UK zone 8 and is frost tender. It is in leaf all year, in flower from August to October. The species is dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required). and is pollinated by wasps and flies.
It can fix Nitrogen.
Suitable for: light (sandy) and medium (loamy) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils and can grow in very alkaline soils.
It cannot grow in the shade. It prefers dry or moist soil and can tolerate drought. The plant can tolerates strong winds but not maritime exposure.

UK Hardiness Map US Hardiness Map

Synonyms

Habitats

Edible Uses

Seedpods - raw or ground into a powder[1, 7, 74, 89, 177]. The seedpods are filled with a saccharine pulp and can be eaten both green or dried[2]. They are very sweet but fibrous[183], the pulp can be used as a chocolate substitute in cakes, drinks etc[183]. It is rich in sugars and protein[183]. The pods contain about 55% sugars, 10% protein[100] and 6% fat[74]. Seed - rich in protein. A flour is made from them which is 60% protein, it is free from sugar and starch and is suitable for baking[64, 171]. It can be used as a chocolate substitute[148]. An edible gum is extracted from the seed, a substitute for Gum Tragacanth (see Astragalus species)[64]. A stabilizer and thickening agent[142, 183], it is also used as an egg substitute[61, 64, 142]. The roasted seed is a coffee substitute[61, 105, 183].

References   More on Edible Uses

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.


The pulp in the seedpods of carob is very nutritious and, due to its high sugar content, sweet-tasting and mildly laxative[254]. However, the pulp in the pods is also astringent and, used in a decoction, will treat diarrhoea and gently help to cleanse and also relieve irritation within the gut[240, 254]. Whilst these appear to be contradictory effects, carob is an example of how the body responds to herbal medicines in different ways, according to how the herb is prepared and according to the specific medical problem[254]. The seedpods are also used in the treatment of coughs[240]. A flour made from the ripe seedpods is demulcent and emollient[7]. It is used in the treatment of diarrhoea[7]. The seed husks are astringent and purgative[240]. The bark is strongly astringent[254]. A decoction is used in the treatment of diarrhoea[254].

References   More on Medicinal Uses

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Other Uses

A flour made from the seedpods is used in the cosmetic industry to make face-packs[7]. Tannin is obtained from the bark[7]. Wood - hard, lustrous. Highly valued by turners, it is also used for marquetry and walking sticks[7, 61, 89, 100].

Special Uses

References   More on Other Uses

Cultivation details

Landscape Uses:Aggressive surface roots possible. Requires a very sunny position in any well-drained moderately fertile soil[200]. Does well in calcareous, gravelly or rocky soils[132, 166]. Tolerates salt laden air[132]. Tolerates a pH in the range 6.2 to 8.6. The tree is very drought resistant, thriving even under arid conditions, the roots penetrating deep into the soil to find moisture[4, 64, 132, 200]. This species is not very hardy in Britain but it succeeds outdoors in favoured areas of S. Cornwall[1], tolerating temperatures down to about -5°c when in a suitable position[200]. The young growth in spring, even on mature plants, is frost-tender and so it is best to grow the plants in a position sheltered from the early morning sun[K]. The carob is frequently cultivated in warm temperate zones for its edible seed and seed pods[1]. Mature trees in a suitable environment can yield up to 400 kilos of seedpods annually[64]. There are named varieties with thicker pods[64, 183]. Seeds are unlikely to be produced in Britain since the tree is so near (if not beyond) the limits of its cultivation[K]. The seed is very uniform in size and weight, it was the original 'carat' weight of jewellers[1, 89]. This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[200]. Special Features:Edible, Not North American native, Inconspicuous flowers or blooms.

References   Carbon Farming Information and Carbon Sequestration Information

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Propagation

Seed - pre-soak for 24 hours in warm water prior to sowing. If the seed has not swollen then give it another soaking in warm water until it does swell up. Sow in a greenhouse in April[200]. Germination should take place within 2 months. As soon as they are large enough to handle, prick the seedlings out into individual deep pots and grow them on in a greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Give them some protection from the cold for their first few winters outdoors.

Other Names

If available other names are mentioned here

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Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Ceratonia siliquaCarob, St. john's breadTree15.0 9-11 MLMNDM322

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

 

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Botanical References

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