If you would like to support this site, please consider Donating.
Useful Temperate Plants

Pyrus calleryana

Decne.

Rosaceae


In spite of their wide geographic distribution, the various species in the genus Pyrus are intercrossable without major incompatibility barriers. Also, the high morphological diversity and the lack of distinguishing characters among the species have been reported. Therefore, the classification of species in this genus is problematic and often confusing, giving different populations designated as different species by some authors. It is likely that, when the genus is reviewed, there will be several changes to the nomenclature[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

+ Synonyms

Pyrus dimorphophylla Makino

Pyrus kawakamii Hayata

Pyrus koehnei C.K.Schneid.

Pyrus mairei H.Lév.

Common Name: Callery Pear

Pyrus calleryana
Flowering tree a the Morton Arboretum, USA
Photograph by: Bruce Marlin
Creative Commons License
Pyrus calleryana Pyrus calleryana Pyrus calleryana Pyrus calleryana Pyrus calleryana Pyrus calleryana Pyrus calleryana

General Information

Pyrus calleryana is an unarmed, deciduous tree with a narrow, conical crown, it usually grows 5 - 8 metres tall, sometimes reaching 15 metres tall but sometimes only a shrub[
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
,
372
Title
Flowers of India
Publication
 
Author
 
Website
http://www.flowersofindia.net/
Publisher
 
Year
0
ISBN
 
Description
A wed site of native Indian plants, plus cultivated and naturalized species. It has good quality photos and terse details on more than 3,000 species and cultivars.
,
1212
Title
New Trees
Publication
 
Author
Grimshaw J.; Bayton R.; Wilks H.
Publisher
Kew Publishing; London
Year
2009
ISBN
1842461737
Description
Provides comprehensive botanical descriptions and horticultural commentary on over 800 tree species that have been introduced to cultivation in recent decades.
,
1213
Title
Southern Trees Fact Sheets
Publication
 
Author
Gilman E.F.
Website
http://edis.ifas.ufl.edu/department_envhort-trees
Publisher
University of Florida, IFAS Extension
Year
0
ISBN
 
Description
A series of fact sheets on trees that can be grown in Florida. They can be downloaded from the Internet
].
The tree is harvested from the wild for local use as a food and source of materials. It is widely used as a rootstock in China and is also often grown as an ornamental.
The cultivar 'Bradford', which produces sterile fruits, has been widely planted throughout the United States since the early 1900s, but recent cultivars, which have been bred to reduce the tendency of the tree to split in snow or high winds, have produced viable seeds. These seeds have been spread into the envoronment by fruit-eating animals, especially birds, and plants developing from these seeds have become established in various areas of eastern N. America. Pyrus calleryana often invades disturbed areas and can disrupt the establishment of middle to late successional species, sometimes forming dense thorny thickets that are impenetrable to humans[
413
Title
Global Invasive Species Database
Publication
 
Author
 
Website
http://www.issg.org/database/welcome/
Publisher
 
Year
0
ISBN
 
Description
Very detailed information on almost 400 species (with more being added) of plants that have become weeds in areas outside their native range.
].

Known Hazards

The pollen can be bothersome to people with allergies[
372
Title
Flowers of India
Publication
 
Author
 
Website
http://www.flowersofindia.net/
Publisher
 
Year
0
ISBN
 
Description
A wed site of native Indian plants, plus cultivated and naturalized species. It has good quality photos and terse details on more than 3,000 species and cultivars.
].
Although no specific information has been seen for this plant, the seed of many species in the family Rosaceae are likely to contain cyanogenic glycosides. When injested, these compounds break down in the digestive tract to release cyanide. Used in small quantities in both traditional and conventional medicine, this exceedingly poisonous compound has been shown to stimulate respiration, improve digestion, and promote a sense of well-being[
238
Title
Encyclopaedia of Herbs and their Uses.
Publication
 
Author
Bown. D.
Publisher
Dorling Kindersley, London.
Year
1995
ISBN
0-7513-020-31
Description
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.
]. It is also claimed by some to be of benefit in the treatment of cancer - though this claim has been largely refuted.
In larger concentrations, however, cyanide can cause gasping, weakness, excitement, pupil dilation, spasms, convulsions, coma and respiratory failure leading to death[
293
Title
Poisonous Plants of North Carolina
Publication
 
Author
 
Website
http://www.ces.ncsu.edu/depts/hort/consumer/poison/poison.htm
Publisher
 
Year
0
ISBN
 
Description
An excellent concise but comprehensive guide to toxic plants that grow in N. Carolina. It lists even those plants that are of very low toxicity, including several well-known food plants such as carrots and potatoes.
].
The levels of toxin can be detected by the level of bitterness:- sweet almonds, for example, contain only very low levels of it and are safe to eat in quantity, whilst bitter almonds (which are used as a flavouring in foods such as marzipan) contain much higher levels and should only be eaten in very small quantities. Great caution should be employed if the taste is moderately to very bitter[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

Botanical References

11
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
,
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
,
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.

Range

E. Asia - southern and eastern China, central and southern Japan, northern Vietnam.

Habitat

Thickets and streamsides; at elevations up to 1,500 metres[
109
Title
Plantae Wilsonae. Vol 1 - 3
Publication
 
Author
Wilson. E. H.
Website
http://www.biodiversitylibrary.org
Publisher
University Press; Cambridge.
Year
1911 - 1917
ISBN
 
Description
Details of the palnts collected by the plant collector E. H. Wilson on his travels in China. Gives some habitats. Not for the casual reader. It can be downloaded from the internet.
]. Slopes, plains, mixed valley forests and thickets; at elevations from 100 - 1,800 metres[
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
].

Properties

Weed PotentialYes
Edibility Rating *  *
Other Uses Rating *  *  *
HabitDeciduous Tree
Height8.00 m
Growth RateMedium
PollinatorsInsects
Cultivation StatusCultivated, Ornamental, Wild

Cultivation Details

Pyrus calleryana is a very cold-hardy plant, tolerating temperatures down to around -40°c when dormant[
160
Title
Wonder Crops. 1987.
Publication
 
Author
Natural Food Institute,
Publisher
 
Year
 
ISBN
 
Description
Fascinating reading, this is an annual publication. Some reports do seem somewhat exaggerated though.
,
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Prefers a good well-drained loam in full sun[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Grows well in heavy clay soils. Tolerates light shade but does not fruit so well in such a position. Tolerates atmospheric pollution, excessive moisture and a range of soil types if they are moderately fertile[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Established plants are drought tolerant[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Grows well on acid soils[
160
Title
Wonder Crops. 1987.
Publication
 
Author
Natural Food Institute,
Publisher
 
Year
 
ISBN
 
Description
Fascinating reading, this is an annual publication. Some reports do seem somewhat exaggerated though.
].
There are many named forms selected for their ornamental value[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. The cultivar 'Bradford' is a dense, vigorous tree that is resistant to fireblight, though it has a tendency to split in snow or high winds[
188
Title
The RHS Gardener's Encyclopedia of Plants and Flowers
Publication
 
Author
Brickell. C.
Publisher
Dorling Kindersley Publishers Ltd.
Year
1990
ISBN
0-86318-386-7
Description
Excellent range of photographs, some cultivation details but very little information on plant uses.
,
413
Title
Global Invasive Species Database
Publication
 
Author
 
Website
http://www.issg.org/database/welcome/
Publisher
 
Year
0
ISBN
 
Description
Very detailed information on almost 400 species (with more being added) of plants that have become weeds in areas outside their native range.
,
1212
Title
New Trees
Publication
 
Author
Grimshaw J.; Bayton R.; Wilks H.
Publisher
Kew Publishing; London
Year
2009
ISBN
1842461737
Description
Provides comprehensive botanical descriptions and horticultural commentary on over 800 tree species that have been introduced to cultivation in recent decades.
].
Plants are moderate to fast growing[
1213
Title
Southern Trees Fact Sheets
Publication
 
Author
Gilman E.F.
Website
http://edis.ifas.ufl.edu/department_envhort-trees
Publisher
University of Florida, IFAS Extension
Year
0
ISBN
 
Description
A series of fact sheets on trees that can be grown in Florida. They can be downloaded from the Internet
].
Resists fireblight, collar rot, root aphis, pear psylla and root lesion nematodes[
160
Title
Wonder Crops. 1987.
Publication
 
Author
Natural Food Institute,
Publisher
 
Year
 
ISBN
 
Description
Fascinating reading, this is an annual publication. Some reports do seem somewhat exaggerated though.
]. This species is resistant to most important diseases and pests. For this reason, several different cultivars had been selected as street trees[
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
]..
Trees have a short dormancy period and lose their leaves late in the season[
160
Title
Wonder Crops. 1987.
Publication
 
Author
Natural Food Institute,
Publisher
 
Year
 
ISBN
 
Description
Fascinating reading, this is an annual publication. Some reports do seem somewhat exaggerated though.
].

Edible Uses

Fruit - raw or cooked[
105
Title
Tanaka's Cyclopedia of Edible Plants of the World.
Publication
 
Author
Tanaka. T. & Nakao S.
Publisher
Keigaku Publishing; Tokyo
Year
1976
ISBN
-
Description
The most comprehensive list of 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.
]. Best used after it has been exposed to frost[
177
Title
Plants for Human Consumption.
Publication
 
Author
Kunkel. G.
Publisher
Koeltz Scientific Books
Year
1984
ISBN
3874292169
Description
An excellent book for the dedicated. A comprehensive listing of Latin names with a brief list of edible parts.
,
183
Title
Cornucopia - A Source Book of Edible Plants.
Publication
 
Author
Facciola. S.
Publisher
Kampong Publications
Year
1990
ISBN
0-9628087-0-9
Description
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.
], since this will soften and sweeten the flesh[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
]. The globose fruit is blackish-brown with pale dots about 10 - 25mm in diameter[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
,
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
].

Medicinal

None known

Other Uses

This species is widely used as a rootstock[
183
Title
Cornucopia - A Source Book of Edible Plants.
Publication
 
Author
Facciola. S.
Publisher
Kampong Publications
Year
1990
ISBN
0-9628087-0-9
Description
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.
], especially for cultivars of Pyrus pyrifolia[
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
]. It is resistant to most important diseases and pests, and is said to induce earlier bearing[
160
Title
Wonder Crops. 1987.
Publication
 
Author
Natural Food Institute,
Publisher
 
Year
 
ISBN
 
Description
Fascinating reading, this is an annual publication. Some reports do seem somewhat exaggerated though.
,
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
].

The wood of this species is hard and close-grained, and is sometimes used for making furniture and stools[
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
].

Propagation

Seed - best sown in a cold frame as soon as it is ripe in the autumn, it will then usually germinate in mid to late winter. Stored seed requires 8 - 10 weeks cold stratification at 1°c and should be sown as early in the year as possible[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Temperatures over 15 - 20°c induce a secondary dormancy in the seed[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in light shade in a cold frame or greenhouse for their first year. Plant them out in late spring or early summer of the following year.
Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2018-12-12. <temperate.theferns.info/plant/Pyrus+calleryana>

Add a Comment:

If you have any useful information about this plant, please leave a comment. Comments have to be approved before they are shown here.