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Cucurbita pepo

Common name: Pumpkin Family: Cucurbitaceae
Author: L. Botanical references: 200
Synonyms:  
Known Hazards: The sprouting seed produces a toxic substance in its embryo[65].
Range: C. America? The origin is obscure[86].
Habitat: Not known in the wild.
Edibility Rating (1-5): 3Medicinal Rating (1-5):3

Other Possible Synonyms:From various places across the web, may not be correct. See below.
C. mammeata[G] C. melopepo[H] Cucumis pepo[G]
Other Common Names:From various places around the Web, may not be correct. See below.
Acorn Squash [H], Calabacera [E], Delicata Squash [H], Field Pumpkin [B,P], Jack O'Lanterns [H], Kabak [E], Kulakah [E], Kurbis [E], Labu Ayer [E], Lacayote [E], Marrow [L], Naked-Seeded Pumpkins [H], Pimpkin [E], Pumpkin [H], Qabagh [E], Shijar [E], Spaghetti Squash [H], Summer Squash [H],
Systematics:From a USDA Plants Database
Order: Violales. Cucumber family
Other Range Info: From the Ethnobotany Database
China; Europe; Iraq; Java; Kurdistan; Lesotho; Peru; Spain; Trinidad; Turkey; Venezuela; Wi

Physical Characteristics

Annual Climber growing to 0.6m by 5m at a fast rate. It is hardy to zone 10 and is frost tender. It is in flower from July to September, and the seeds ripen from August to October. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Insects. The plant is self-fertile. We rate it 3/5 for edibility and 3/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and requires well-drained soil. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It requires moist soil.

Habitats and Possible Locations

Cultivated Beds.

Edible Uses

Flowers; Fruit; Leaves; Oil; Root; Seed.

Fruit - cooked[2, 27, 46, 105]. Used as a vegetable, it has a very mild flavour and is very watery[K]. It is often harvested when still very young when it is called courgettes. The fruit has very little flavour of its own and so is often used as a base for making savoury dishes, the seeds being scooped out of the fruit and a filling being put in its place - this can then be baked[K]. A nutritional analysis is available[218].
Seed - raw or cooked[57, 86, 183]. The seed can also be ground into a powder and mixed with cereals for making bread etc[183]. Rich in oil with a pleasant nutty flavour but very fiddly to use because the seed is small and covered with a fibrous coat[K]. A nutritional analysis is available[218]. The seeds can also be sprouted and used in salads etc[183]. Some caution is advised here, see notes above on toxicity.
An edible oil is obtained from the seed[46, 105, 117, 183].
Leaves and young stems - cooked as a potherb[135, 183]. A nutritional analysis is available[218].
Flowers and flower buds - cooked or dried for later use[135, 183]. A nutritional analysis is available[218].
Root - cooked[179]. We have some doubts on this report[K].

Composition

Seed (Dry weight)
In grammes per 100g weight of food:
Water: 0 Calories: 578 Protein: 30.3 Fat: 48.8 Carbohydrate: 15.7 Fibre: 2 Ash: 5.1
In milligrammes per 100g weight of food:
Calcium: 53 Phosphorus: 1197 Iron: 12 VitaminA: 44 Thiamine: 0.2 Riboflavin: 0.2 Niacin: 2.5
Source: [218]
Leaves (Dry weight)
In grammes per 100g weight of food:
Water: 0 Calories: 271 Protein: 43.8 Fat: 4.2 Carbohydrate: 35.4 Fibre: 15.6 Ash: 16.7
In milligrammes per 100g weight of food:
Calcium: 1323 Phosphorus: 1000 Iron: 60.4 VitaminA: 16979 Thiamine: 1.5 Riboflavin: 1.8 Niacin: 18.8 VitaminC: 604
Source: [218]
Fruit (Dry weight)
In grammes per 100g weight of food:
Water: 0 Calories: 333 Protein: 8.6 Fat: 2.5 Carbohydrate: 81.5 Fibre: 9.9 Ash: 7.4
In milligrammes per 100g weight of food:
Calcium: 296 Phosphorus: 407 Iron: 8.6 Sodium: 99 Potassium: 4321 VitaminA: 9691 Thiamine: 0.37 Riboflavin: 0.49 Niacin: 6.2 VitaminC: 173
Source: [218]
Flowers (Dry weight)
In grammes per 100g weight of food:
Water: 0 Calories: 308 Protein: 26.9 Fat: 5.8 Carbohydrate: 51.9 Fibre: 11.5 Ash: 15.4
In milligrammes per 100g weight of food:
Calcium: 904 Phosphorus: 1653 Iron: 19.2 VitaminA: 7692 Thiamine: 0.38 Riboflavin: 2.12 Niacin: 11.54 VitaminC: 346
Source: [218]

Medicinal Uses

Disclaimer

Anthelmintic; Miscellany; Poultice.

The pumpkin has been much used as a medicine in Central and North America. It is a gentle and safe remedy for a number of complaints, especially as an effective tapeworm remover for children and pregnant women for whom stronger acting and toxic remedies are unsuitable[254].
The seeds are mildly diuretic and vermifuge[7, 88, 254]. The complete seed, together with the husk, is used to remove tapeworms. The seed is ground into a fine flour, then made into an emulsion with water and eaten. It is then necessary to take a purgative afterwards in order to expel the tapeworms or other parasites from the body[7]. As a remedy for internal parasites, the seeds are less potent than the root of Dryopteris felix-mas, but they are safer for pregnant women, debilitated patients and children[238]. The seed is used to treat hypertrophy of the prostate[218]. The seed is high in zinc and has been used successfully in the early stages of prostate problems[254]. The diuretic action has been used in the treatment of nephritis and other problems of the urinary system[254].
The leaves are applied externally to burns[240]. The sap of the plant and the pulp of the fruit can also be used[254].
The fruit pulp is used as a decoction to relieve intestinal inflammation[254].

Other Uses

Oil.

The seed contains 34 - 54% of a semi-drying oil. Used for lighting[46].

Cultivation details

Requires a rich, well-drained moisture retentive soil and a very warm, sunny and sheltered position[1, 16, 37, 86]. Prefers a pH of 5.5 to 5.9, but tolerates up to 6.8[86]. Plants are tolerant of light shade[86] (This comment is probably more applicable to warmer climates than Britain[K].).
A frost-tender annual plant, the pumpkin or marrow is widely cultivated in temperate and tropical zones for its edible fruit. It has long been grown as a domestic plant and a number of different groups have been developed. Botanists have tried to classify these groups, though there is considerable overlap and clear distinctions are not always possible. Since they are very similar in their cultivation needs, we have treated all the groups together in this entry. The botanists classification is as follows:-
C. pepo pepo. This includes the vegetable marrows, zucchinis, pumpkins and ornamental gourds. There are many named varieties and these can vary considerably in size, shape and flavour[27, 183, 200]. The cultivars with larger and rounder fruits are usually called pumpkins, the fruits are harvested in the autumn and can be stored for a few months. The marrows are smaller than pumpkins and generally sausage-shaped. These can also be harvested in the autumn and stored for a few months, but it is more usual to eat them whilst they are still very small, when they are known as courgettes. Harvesting the fruits of the marrows when very small stimulates the plant into making more flowers (and hence fruits) so it can be a very productive way of using the plant.
Pumpkins and marrows succeed outdoors most summers in Britain[27], in fact many of these varieties are well adapted to cool growing conditions and therefore do well in the British climate[200].
C. pepo pepo fraterna. This is the probable progenitor of the marrows and so is of potential value in any breeding programmes.
C. pepo ovifera. This group includes various summer squashes including the acorn, crookneck and patty pan squashes.
C. pepo ovifera ozarkana. A probable ancestor of the summer squashes, it could be of value in breeding programmes.
C. pepo texana. The texas gourd, or wild marrow, is another form that could be of value in breeding programmes.
Plants produce both male and female flowers. These are insect pollinated but in cool weather it is worthwhile hand pollinating[200]. Most cultivars are day-length neutral and so are able to flower and fruit throughout the British summer[200].
A fast-growing plant, trailing forms can be used to provide a summer screen[86].
This species does not hybridize naturally with other edible members of this genus[135].
Squashes and pumpkins can be differentiated from each other by their fruit stalk, it is angular and polygonal in pumpkins but thick, soft and round in squashes[132].
Pumpkins grow well with sweetcorn and thornapple but they dislike growing near potatoes[18, 20, 201]. They also grow well with nasturtiums, mint, beans and radishes[201].

Propagation

Seed - sow April in a greenhouse in a rich soil. Germination should take place within 2 weeks. Sow 2 or 3 seeds per pot and thin out to the best plant. The seed requires a minimum temperature of 13°c to germinate[200]. Grow them on fast and plant out after the last expected frosts, giving them cloche or frame protection for at least their first few weeks outdoors until they are growing strongly.

Cultivars

''
There are many named varieties of this annual vegetable, with new forms being developed each year. At present there is not time to enter these in the database and it is recommended that you consult the book 'The Fruit and Vegetable Finder' which is updated regularly and can be obtained from libraries.

Suppliers

For more details of plant suppliers please see our Suppliers Page which lists many more places to look.

Web References

References for cucurbita pepo (a possible synonym).

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[K] Ken Fern
Notes from observations, tasting etc at Plants For A Future and on field trips.

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).

[2] Hedrick. U. P. Sturtevant's Edible Plants of the World. Dover Publications 1972 ISBN 0-486-20459-6
Lots of entries, quite a lot of information in most entries and references.

[7] Chiej. R. Encyclopaedia of Medicinal Plants. MacDonald 1984 ISBN 0-356-10541-5
Covers plants growing in Europe. Also gives other interesting information on the plants. Good photographs.

[16] Simons. New Vegetable Growers Handbook. Penguin 1977 ISBN 0-14-046-050-0
A good guide to growing vegetables in temperate areas, not entirely organic.

[18] Philbrick H. and Gregg R. B. Companion Plants. Watkins 1979
Details of beneficial and antagonistic relationships between neighbouring plants.

[20] Riotte. L. Companion Planting for Successful Gardening. Garden Way, Vermont, USA. 1978 ISBN 0-88266-064-0
Fairly good.

[27] Vilmorin. A. The Vegetable Garden. Ten Speed Press ISBN 0-89815-041-8
A reprint of a nineteenth century classic, giving details of vegetable varieties. Not really that informative though.

[37] Thompson. B. The Gardener's Assistant. Blackie and Son. 1878
Excellent general but extensive guide to gardening practices in the 19th century. A very good section on fruits and vegetables with many little known species.

[46] Uphof. J. C. Th. Dictionary of Economic Plants. Weinheim 1959
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.

[57] Schery. R. W. Plants for Man.
Fairly readable but not very comprehensive. Deals with plants from around the world.

[65] Frohne. D. and Pfänder. J. A Colour Atlas of Poisonous Plants. Wolfe 1984 ISBN 0723408394
Brilliant. Goes into technical details but in a very readable way. The best work on the subject that I've come across so far.

[86] Organ. J. Gourds. Faber 1963
Deals with squashes and their relatives. Interesting and readable, it gives cultivation techniques and some details of plant uses.

[88] RHS. The Garden. Volume 112. Royal Horticultural Society 1987
Snippets of information from the magazine of the RHS. In particular, there are articles on plants that are resistant to honey fungus, oriental vegetables, Cimicifuga spp, Passiflora species and Cucurbits.

[105] Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing 1976
The most comprehensive guide to edible plants I've come across. Only the briefest entry for each species, though, and some of the entries are more than a little dubious. Not for the casual reader.

[117] Rosengarten. jnr. F. The Book of Edible Nuts. Walker & Co. 1984 ISBN 0802707699
A very readable and comprehensive guide. Well illustrated.

[132] Bianchini. F., Corbetta. F. and Pistoia. M. Fruits of the Earth.
Lovely pictures, a very readable book.

[135] ? The Plantsman. Vol.8. 1986 - 1987. Royal Horticultural Society 1986
Excerpts from the periodical giving cultivation details and other notes on some of the useful plants including some Cucurbitaceae.

[179] Reid. B. E. Famine Foods of the Chiu-Huang Pen-ts'ao. Taipei. Southern Materials Centre 1977
A translation of an ancient Chinese book on edible wild foods. Fascinating.

[183] Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications 1990 ISBN 0-9628087-0-9
Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[201] Allardice.P. A - Z of Companion Planting. Cassell Publishers Ltd. 1993 ISBN 0-304-34324-2
A well produced and very readable book.

[218] Duke. J. A. and Ayensu. E. S. Medicinal Plants of China Reference Publications, Inc. 1985 ISBN 0-917256-20-4
Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.

[238] Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995 ISBN 0-7513-020-31
A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.

[240] Chopra. R. N., Nayar. S. L. and Chopra. I. C. Glossary of Indian Medicinal Plants (Including the Supplement). Council of Scientific and Industrial Research, New Delhi. 1986
Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.

[254] Chevallier. A. The Encyclopedia of Medicinal Plants Dorling Kindersley. London 1996 ISBN 9-780751-303148
An excellent guide to over 500 of the more well known medicinal herbs from around the world.


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