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Useful Temperate Plants

Ulmus thomasii

Sarg.

Ulmaceae

+ Synonyms

Ulmus racemosa D.Thomas

Common Name: Rock Elm

No Image.

General Information

Ulmus thomasii is a deciduous tree with an oblong crown; it can grow up to 30 metres tall[
270
Title
Flora of N. America
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/fna/
Publisher
 
Year
0
ISBN
 
Description
An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
].
The tree is harvested on a commercial basis for its wood, known as 'rock elm'[
379
Title
Silvics of North America. Agricultural Handbook No. 654.
Publication
 
Author
Burns. R.M. & Honkala. B.H.
Website
http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm
Publisher
USDA Forest Service; Washington DC.
Year
1990
ISBN
 
Description
A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet.
].
Rock elm wood has long been valued for its exceptional strength and superior quality. For this reason rock elm has been drastically overcut in many localities[
379
Title
Silvics of North America. Agricultural Handbook No. 654.
Publication
 
Author
Burns. R.M. & Honkala. B.H.
Website
http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm
Publisher
USDA Forest Service; Washington DC.
Year
1990
ISBN
 
Description
A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet.
].

Known Hazards

None known

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.
,
270
Title
Flora of N. America
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/fna/
Publisher
 
Year
0
ISBN
 
Description
An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.

Range

Central and eastern N. America - Minnesota to southern Ontaria and Vermont, south to Arkansas and Tennessee

Habitat

Rich woods and calcareous uplands[
43
Title
Gray's Manual of Botany.Eighth Edition
Publication
 
Author
Fernald. M. L.
Publisher
American Book Co.; New York
Year
1950
ISBN
0442222505
Description
A bit dated but a good and concise flora of the eastern part of N. America.
]. Dry gravelly uplands, low heavy clay soils, rocky slopes and river cliffs[
82
Title
Manual of the Trees of N. America.
Publication
 
Author
Sargent. C. S.
Website
http://www.biodiversitylibrary.org/
Publisher
Dover Publications Inc. New York.
Year
1965
ISBN
0-486-20278-X
Description
Two volumes, a comprehensive listing of N. American trees though a bit out of date now. Good details on habitats, some details on plant uses. Not really for the casual reader. It can be downloaded from the internet.
]. Rocky slopes, limestone outcrops, rich woods, flood plains, stream banks; at elevations from 30 - 900 metres[
270
Title
Flora of N. America
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/fna/
Publisher
 
Year
0
ISBN
 
Description
An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
].

Properties

Edibility Rating *  *
Medicinal Rating *  *
Other Uses Rating *  *  *
HabitDeciduous Tree
Height30.00 m
Growth RateSlow
PollinatorsWind
Self-fertileYes
Cultivation StatusWild

Cultivation Details

Ulmus thomasii is native to the continental climate of central and eastern N. America, with its cold winters and warm summers. It dislikes maritime climates. It can experience summer temperatures as high as 38°c and winter temperatures as low as -34°c, with a frost-free period ranging from 100 - 200 days[
379
Title
Silvics of North America. Agricultural Handbook No. 654.
Publication
 
Author
Burns. R.M. & Honkala. B.H.
Website
http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm
Publisher
USDA Forest Service; Washington DC.
Year
1990
ISBN
 
Description
A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet.
]. Mean annual rainfall can range from 640 - 1,270mm, usually spread through the year.
Prefers a deep fertile soil in full sun[
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.
,
229
Title
The Complete Trees of N. America. Field Guide and Natural History.
Publication
 
Author
Elias. T.
Publisher
Van Nostrand Reinhold Co.
Year
1980
ISBN
0442238622
Description
A very good concise guide. Gives habitats, good descriptions, maps showing distribution and a few of the uses. It also includes the many shrubs that occasionally reach tree proportions.
], but can be grown in any soil of at least moderate quality so long as it is well drained[
1
Title
RHS Dictionary of Plants plus Supplement. 1956
Publication
 
Author
F. Chittendon.
Publisher
Oxford University Press
Year
1951
ISBN
-
Description
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
]. Plants are tolerant of poor soil conditions in the wild[
229
Title
The Complete Trees of N. America. Field Guide and Natural History.
Publication
 
Author
Elias. T.
Publisher
Van Nostrand Reinhold Co.
Year
1980
ISBN
0442238622
Description
A very good concise guide. Gives habitats, good descriptions, maps showing distribution and a few of the uses. It also includes the many shrubs that occasionally reach tree proportions.
]. Found in the wild on slightly alkaline to strongly acid soils[
379
Title
Silvics of North America. Agricultural Handbook No. 654.
Publication
 
Author
Burns. R.M. & Honkala. B.H.
Website
http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm
Publisher
USDA Forest Service; Washington DC.
Year
1990
ISBN
 
Description
A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet.
].
A very slow growing tree, even in its native range[
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.
].
This species is susceptible to 'Dutch elm disease'[
274
Title
Illustrated Flora of North Central Texas
Publication
 
Author
Diggs, Jnr. G.M.; Lipscomb. B. L. & O'Kennon. R. J
Website
http://artemis.austincollege.edu/acad/bio/gdiggs/NCTXpdf.htm
Publisher
Botanical Research Institute, Texas.
Year
1999
ISBN
1-889878-01-4
Description
An excellent flora, which is also available on-line.
], a disease that has destroyed the greater part of all the native elm trees growing in countries such as Britain and USA. The disease is spread by means of beetles. Mature trees killed back by the disease will often regrow from suckers, but these too will succumb when they get larger. There is no effective cure (1992) for the problem, but most E. Asian, though not Himalayan, species are resistant (though not immune) to the disease so the potential exists to use these resistant species to develop new resistant hybrids with the native species[
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.
].
This species hybridizes with Ulmus pumila and Ulmus laevis[
379
Title
Silvics of North America. Agricultural Handbook No. 654.
Publication
 
Author
Burns. R.M. & Honkala. B.H.
Website
http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm
Publisher
USDA Forest Service; Washington DC.
Year
1990
ISBN
 
Description
A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet.
].
The various species of this genus hybridize freely with each other and pollen is easily saved, so even those species with different flowering times can be hybridized[
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.
].

Edible Uses

Leaves - raw or cooked. We have no specific information for this species, but the very young leaves of all Ulmus species can be eaten, and generally have a mild flavour[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

Medicinal

Collectively, the bark of all species in the genus Ulmus may have anti-inflammatory effects in the gut[
1141
Title
Ulmus davidiana var. japonica Nakai Upregulates Eosinophils and Suppresses Th1 and Th17 Cells in the Small Intestine
Publication
PLoS ONE 8(10): e76716. doi:10.1371/journal.pone.0076716
Author
Lee H-S, Jang MS, Kim J-H, Hong C-P, Lee E-J, et al
Publisher
 
Year
2013
ISBN
 
Description
 
].

Other Uses

The wood is very strong, hard, heavy, tough, elastic, durable, close and beautifully grained, difficult to split. It weighs 45lb per cubic foot and is used for furniture, general construction, agricultural implements, wheel hubs, as a veneer base, and other purposes demanding toughness, solidity and flexibility[
46
Title
Dictionary of Economic Plants.
Publication
 
Author
Uphof. J. C. Th.
Publisher
Weinheim
Year
1959
ISBN
-
Description
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.
,
61
Title
A Dictionary of Plants Used by Man.
Publication
 
Author
Usher. G.
Publisher
Constable
Year
1974
ISBN
0094579202
Description
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.
,
82
Title
Manual of the Trees of N. America.
Publication
 
Author
Sargent. C. S.
Website
http://www.biodiversitylibrary.org/
Publisher
Dover Publications Inc. New York.
Year
1965
ISBN
0-486-20278-X
Description
Two volumes, a comprehensive listing of N. American trees though a bit out of date now. Good details on habitats, some details on plant uses. Not really for the casual reader. It can be downloaded from the internet.
,
171
Title
Economic Botany.
Publication
 
Author
Hill. A. F.
Publisher
The Maple Press
Year
1952
ISBN
-
Description
Not very comprehensive, but it is quite readable and goes into some detail about the plants it does cover.
,
226
Title
Identification Guide to the Trees of Canada
Publication
 
Author
Lauriault. J.
Publisher
Fitzhenry and Whiteside, Ontario.
Year
1989
ISBN
0889025649
Description
Very good on identification for non-experts, the book also has a lot of information on plant uses.
,
229
Title
The Complete Trees of N. America. Field Guide and Natural History.
Publication
 
Author
Elias. T.
Publisher
Van Nostrand Reinhold Co.
Year
1980
ISBN
0442238622
Description
A very good concise guide. Gives habitats, good descriptions, maps showing distribution and a few of the uses. It also includes the many shrubs that occasionally reach tree proportions.
,
235
Title
An Illustrated Flora of the Northern United States and Canada
Publication
 
Author
Britton. N. L. Brown. A.
Publisher
Dover Publications. New York.
Year
1970
ISBN
0-486-22642-5
Description
Reprint of a 1913 Flora, but still a very useful book.
,
379
Title
Silvics of North America. Agricultural Handbook No. 654.
Publication
 
Author
Burns. R.M. & Honkala. B.H.
Website
http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm
Publisher
USDA Forest Service; Washington DC.
Year
1990
ISBN
 
Description
A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet.
].
It is highly shock resistant and has excellent bending qualities which make it good for bent parts of furniture, crates and containers, and a base for veneer. Much of the old-growth was exported for ship timbers[
379
Title
Silvics of North America. Agricultural Handbook No. 654.
Publication
 
Author
Burns. R.M. & Honkala. B.H.
Website
http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm
Publisher
USDA Forest Service; Washington DC.
Year
1990
ISBN
 
Description
A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet.
].

Propagation

Seed - if sown in a cold frame as soon as it is ripe, it usually germinates within a few days[
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.
]. Stored seed does not germinate so well and should be sown in early spring[
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 seed can also be harvested 'green' (when it has fully developed but before it dries on the tree) and sown immediately in a cold frame. It should germinate very quickly and will produce a larger plant by the end of the growing season[
80
Title
Hardy Woody Plants from Seed.
Publication
 
Author
McMillan-Browse. P.
Publisher
Grower Books
Year
1985
ISBN
0-901361-21-6
Description
Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
]. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Plants should not be allowed to grow for more than two years in a nursery bed since they form a tap root and will then move badly.
Layering of suckers or coppiced shoots[
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.
].
Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2018-07-23. <temperate.theferns.info/plant/Ulmus+thomasii>

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