Casimiroa edulis - La Llave.
                 
Common Name White Sapote, Mexican Apple
Family Rutaceae
USDA hardiness 8-11
Known Hazards The seed is said to be fatally toxic if eaten raw by humans or animals[ 303 ]. (Seed is poisonous if ingested)
Habitats Subtropical deciduous woodlands and low forests[ 303 ]. Dryish highland forests at elevations of 600 - 1,000 metres[ 307 ].
Range Central America north to Mexico.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Half Hardy Moist Soil Full sun

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Summary
White Sapote or Casimiroa edulis is a fruit tree of about 18 m tall that can be found in Central America. It has drooping and spreading branches, its leaves are compound palmate and arranged alternately, and its fruits are ovoid drupes. The fruit is consumed either raw or cooked but its seeds are reportedly toxic if eaten raw. Medicinally, white sapote?s different plant parts are used as sedative or as treatment for diabetes, arthritis, rheumatism, and putrid sores.

Casimiroa edulis White Sapote, Mexican Apple


Forest Starr & Kim Starr http://www.starrenvironmental.com/
Casimiroa edulis White Sapote, Mexican Apple
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Physical Characteristics
 icon of manicon of cone
Casimiroa edulis is an evergreen Tree growing to 16 m (52ft) by 16 m (52ft) at a medium rate.
It is hardy to zone (UK) 9. and are pollinated by Bees.It is noted for attracting wildlife.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very alkaline and saline soils.
It cannot grow in the shade. It prefers moist soil and can tolerate drought.

Synonyms
Fagara bobacifolia (A.Rich.) Krug. & Urb. Zanthoxylum araliaceum Turcz. Zanthoxylum bombacifolium A.

Habitats
Edible Uses
Edible portion: Fruit, Seeds, Nut. Fruit - raw or cooked[ 200 ]. A sweet flavour, though the butter-textured flesh can be resinous[ 200 ]. The flavour is peach-like[ 307 ]. The fruit has a remarkably high food value, almost as rich in protein, carbohydrate and vitamins as a banana[ 200 ]. The yellow-green fruit is up to 10cm long[ 200 , 307 ]. Eating the fruit has long been known to produce drowsiness. Some reports say that the seed is toxic if eaten raw, whilst others say that it can be roasted and eaten like nuts[ 301 ].
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 leaves, bark, and especially the seeds contain a glucoside called casimirosine that has sedative activity[ 307 ]. They have been employed as sedatives, soporifics and tranquilizers[ 303 ]. In Costa Rica, the leaf decoction is taken as a treatment for diabetes[ 303 ]. Eating the fruit produces drowsiness and it is widely claimed in Mexico and Central America that consumption of the fruit relieves the pains of arthritis and rheumatism[ 303 ]. The fruit is also reportedly vermifugal[ 303 ]. The seeds contain a number of alkaloids which are narcotic with soporific activity[ 303 ]. Crushed and roasted seeds are effective in healing putrid sores[ 303 ]. Vasodepressive activity of the white sapote is attributed to Na-dimethy-1-histamine, formerly found in nature only in the sponge, Geodia gigas[ 303 ]. Several recent in vitro studies have shown that zapotin - found in the seeds - has potential anti-carcinogenic effects against isolated colon cancer cells.

 

Other Uses
Other uses rating: Low (2/5). Small shade tree, Small fruit tree, Agricultural shade, Screening, Backyard tree. Other Uses The seed is said to be fatally toxic if eaten raw by humans or animals. Extractions from the kernels are an attractive and lethal bait for American cockroaches, having the advantage of killing on the spot rather than at some distance after ingestion of the poison[ 303 ]. The wood is yellow, fine-grained, compact, moderately dense and heavy, medium strong and resistant, but not durable for long. It is occasionally employed in carpentry and for domestic furniture[ 303 ].
Cultivation details
Plants are about as hardy as a lemon (Citrus limon)[ 200 ], which means that they can tolerate occasional frosts. In tropical latitudes the plant can be found at elevations between 700 - 3,000 metres, but it is best grown between 1,000 - 2,000 metres[ 303 ]. In subtropical climate it can be grown at sea level[ 303 ]. It is distinctly subtropical in its climatic requirements, surviving light frosts. On the other hand, flowering during the coldest months tends to result in poor fruit set[ 303 ]. Plants are unlikely to do well in lowland tropical areas, especially in the wetter regions[ K ]. Temperature range for growth is reported to be 14 - 31c with the optimum between 18 - 26c. Temperatures around -1 to -2c may injure young growing shoots and cause fruit drop, whereas temperatures about -3 to -4?c may kill the tree to the ground. Annual rainfall range for growth is reported to be 500 - 4,000mm with the optimum between 1,500 - 3,000mm[ 303 ]. Prefers an open, well-drained site on a loamy soil[ 200 ]. Prefers a pH in the range 7 - 7.5, tolerating 6.5 - 8[ 418 ]. Established plants are drought resistant, though they need adequate moisture if they are to fruit well[ 200 ]. Seedling trees usually begin to bear in 7 - 8 years[ 303 ]. Grafted trees start bearing in 3 - 4 years[ 303 ]. Trees can flower and produce fruit at more than one time of the year[ 377 ]. A mature tree can produce more than 100 kilos of fruit a year[ 377 ]. There are many named varieties[ 200 ] . Frequent light pruning is possible to increase the number of fruiting arms but pruning should not be too heavy. Fruit are picked when colour changes occur and ripened off the tree. They can be stored at 5C for 3-6 weeks. Adding potash prior to fruiting and nitrogen prior to vegetative regrowth is suggested for increased yield. Fruit yields are high. Fruit are easily damaged.
Propagation
Seed - sow in containers. Trees produce taproots, so the seed should be sown in deep containers and the plants moved straight to their permanent positions once they are large enough[ 377 ]. Seed of cultivars does not breed true[ 200 ]. Layering[ 200 ]. Commercial growers in New Zealand have had success with air-layers[ 303 ]. Cuttings are very difficult to root[ 303 ]. Grafting. Seedlings of the cultivar 'Pike', being vigorous growers, are preferred as rootstock. Shield-budding and side-grafting in spring onto stocks up to 2 cm thick give good results. Cleft grafts and slot grafts are made on larger rootstocks and when top working mature trees[ 303 ].
Other Names
White Sapote or Casimiroa edulis. Other Names: Casimiroa, White sapote, Matasano, Mexican apple, Zapote.
Found In
Found In: Africa, Asia, Australia, Bahamas, Belize, Brazil, Central America, Cook Islands, Costa Rica, Cuba, Dominican Republic, East Africa, El Salvador, Guatemala, Haiti, Hawaii, Hispaniola, Honduras, India, Israel, Kenya, Mediterranean, Mexico, New Zealand, Nicaragua, North Africa, North America, Pacific, Panama, Philippines, Puerto Rico, SE Asia, South Africa, South America, Spain, Tasmania, Tuvalu, USA, Venezuela, West Indies, Zimbabwe.
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.

None Known
Conservation Status
IUCN Red List of Threatened Plants Status : This taxon has not yet been assessed.
Related Plants

 

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La Llave.
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For a list of references used on this page please go here
A special thanks to Ken Fern for some of the information used on this page.
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Subject : Casimiroa edulis  

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