Elm: types, characteristics and uses

Elms are trees of the genusElm, of the elm family. The genus is widespread in the temperate regions of Eurasia and North America, as well as in the mountainous regions of Asia and North Africa. Three native species are particularly important in Europe:rough elm, smooth elm and field elm. (Plants of the World Online)

The main ecological role of the elm:

formation of fertile forests of valleys, slopes and floodplains;

strengthening of banks and ravines;

creation of the middle and upper tiers;

rapid decomposition of mineral-rich foliage;

feeding of insects, birds and small mammals;

combination with oak, ash, linden and maple.

Rating in the table:

5 - very high, 4 - high, 3 - average, 2 - low, 1 - very low.

A large comparative table of elm species

View	Height	Durability	Frost	Drought	Flooding	Lime	Shadow	Height	Basic conditions	Leading role	Disease resistance*
Ulmus glabra (Scaly Elm)	25–40 m	300–500 years	5	2–3	2	4	4–5	Fast in his youth	Cool, damp slopes, ravines, rich soils	A large mountain and slope tree	1–2
European elm - U. laevis	25–35 m	300–500 years	5	2	5	3–4	3	Medium-fast	Floodplains, river banks, periodic floods	The main tree of the humid valleys	3–4
Field elm - U. minor	20–30 m	200–400 years	4	4–5	3–4	5	3	Fast	Warm valleys, forest edges, calcareous and alluvial soils	Dry-hardy European elm	1–2
English elm - U. procera	25–35 m	200–400 years	4	3	3	4	3	Average	Cultural landscapes of Western Europe	Historic alleys and hedges	1
Cork elm - forms of U. minor	15–25 m	150–300 years	4	5	2–3	5	3	Average	Dry plains, steppe edges	Drought, wind protection, corky shoot wings	1–2
Siberian elm - U. pumila	10–25 m	80–150 years	5	5	2	4–5	2	Very fast	Dry continental climate, poor soils	Pioneer, forest belts, hybridization	3–4
Chinese elm (U. parvifolia)	10–20 m	150–300 years	3–4	5	3	4	3	Average	Warm climate, cities, well-drained soils	Heat- and drought-resistant urban tree	4–5
Japanese elm - U. davidiana var. japonica	20–30 m	200–350 years	5	3	3–4	3	4	Fast	Cold, humid forests of East Asia	Promising for breeding	3–4
David's Elm - U. davidiana	15–25 m	150–300 years	5	3	3	3	4	Average	Northeast Asia, mountain forests	Genetic resource of resistance	3–4
American elm - U. americana	25–40 m	200–400 years	5	3	4–5	3	3	Fast	Floodplains and rich forests of North America	Tall arched tree	1–3
Red elm - U. rubra	15–25 m	150–250 years	5	3–4	3	3	4	Average	The rich slopes of North America	Medicinal bark, forest undergrowth	2–3
Rocky Elm - U. thomasii	20–30 m	200–300 years	5	4	2	4–5	3	Slow-medium	Stony calcareous soils	Durable wood, dry slopes	2–3
Winged elm – U. alata	10–20 m	100–200 years	3–4	4	3	3–4	3	Average	Southeastern North America	A small tree of dry forests	2–3
Mexican elm - U. mexicana	25–40 m	200–400 years	1	3	4	2–3	4	Fast	Humid mountain subtropics	Large mild climate elm	Not enough data
Himalayan elm – U. wallichiana	20–30 m	200–350 years	3–4	3–4	2	3	4	Average	Himalayan slopes	Genetic resource for breeding	3–4
Androsov's elm - U. × androssowii	15–25 m	100–200 years	5	5	2	4	2–3	Fast	Central Asia, dry cities	Drought-resistant hybrid	3–4

*Resistance to Dutch disease is approximate. It depends not only on the species but also on the specific clone, origin, local vectors, and growing conditions. HybridU. × androssowiioriginated from the field elm and the Siberian elm. (Plants of the World Online)

Three main European elms

1. Ulmus glabra

This is the largest and most characteristic elm of cool European slopes. Its natural range extends from Europe to Western Siberia and northern Iran. In Switzerland, it is found primarily in hilly and mountain forests.Plants of the World Online)

Parameter	Characteristic
Other names	Mountain elm, mountain elm
Height	Usually 25–35 m, sometimes about 40 m
Crown	Wide, powerful, relatively dense
Leaves	Large, rough on top, often with 3 distinct apices
Roots	Deep and wide spreading on good soil
Soil	Rich, loose, fresh, often calcareous
Humidity	Requires constant availability of moisture
Relief	Slopes, ravines, mountain valleys
Shade tolerance	Tall at a young age
Main satellites	Sycamore, ash, large-leaved linden, beech, hazel

Advantages

grows quickly in rich soils;

tolerates cool climates well;

forms a powerful upper tier;

strengthens slopes and ravines;

supports a rich herbaceous undergrowth;

Combines well with ash and sycamore.

Restrictions

does not tolerate prolonged summer drought well;

does not like stagnant waterlogging;

very susceptible to Dutch elm disease;

In open dry areas it often suffers more than inside a mixed forest.

2. Elm (Ulmus laevis)

The European white elm is a specialist in floodplain forests. It tolerates periodic flooding, develops characteristic plank-like trunk bases, and thrives near rivers and damp lowlands. In 2025, InfoFlora reported that its natural presence in Switzerland had been confirmed relatively recently; the species is considered extremely rare here, with only about a thousand specimens.infoflora.ch)

Parameter	Characteristic
Other names	European white elm, spreading elm
Height	25–35 m
Leaves	Asymmetrical, softer than mountain elm leaves
Fetus	Lionfish on a long leg
Roots	Powerful laterals; plank foundations are possible in flooded areas
Soil	Alluvial, loamy, rich
Flooding	High resistance to temporary floods
Drought	Low
World	Young plants tolerate partial shade, while adults thrive in the light.
Main satellites	English oak, ash, alder, willow, field maple on the rises

Special advantage

The European white elm is often less susceptible to Dutch elm disease than other European elms. This isn't absolute physiological immunity: one reason is that it's less attractive to some bark beetles that carry the pathogen.

Where to apply

restoration of floodplain forests;

river banks;

wet valleys;

areas with short-term spring flooding;

microdepressions within the oak-ash forest.

It should not be planted on a dry southern slope.

3. Field elm - Ulmus minor

The field elm is widespread from Europe and North Africa to Central Asia and Iran. It loves the sun, grows quickly, and tolerates heat, drought, calcareous soils, and open landscapes better than other native European elms.euforgen.org)

Parameter	Characteristic
Other names	Elm, birch, dwarf elm
Height	Usually 20-30 m
Leaves	Smaller than the rough elm; often smooth and shiny above
Escapes	Sometimes with cork wings
Roots	Powerful, deep, capable of producing root shoots
Soil	Alluvial, calcareous, clayey or loamy
Drought	High after rooting
Wound	High stability
World	More photophilous than the rough elm
Main satellites	Pedunculate and downy oak, field maple, linden, ash, hawthorn

It differs from the rough elm in its smaller leaves, bare young shoots and the location of the seed in the samara slightly above its middle.infoflora.ch)

The main limitation

The field elm is extremely susceptible to Dutch elm disease. However, it produces root suckers well: even after the death of the tall trunk, the genetic organism can survive and form new shoots.

How to distinguish between the three European species

Sign	Rough elm	Smooth elm	Field elm
Sheet size	The largest	Average	Usually the smallest one
Surface of the sheet	Very rough	Softer, pubescent underneath	Often smooth and shiny on top
Leaf tip	Sometimes three-lobed	Long pointed	Simple, pointed
Base of the leaf	Highly asymmetrical	Very asymmetrical	Asymmetrical
Young shoots	Often hairy	Pubescent	Usually naked
Lionfish	The seed is closer to the center	On a long stalk	Seed above center
Main area	Cool slope	Floodplain	Warm plain
Drought	Low-medium	Low	High
Flooding	Low	Very high	Average
Dutch disease	Very receptive	Relatively less damaged	Very receptive

It is advisable to compare leaves, buds, shoots and fruits simultaneously: individual characteristics are variable, and European elms can hybridize.

The ecological role of elm

Fertile litter

Elm leaves decompose relatively quickly and return calcium, magnesium, potassium, and nitrogen to the soil. Therefore, elm complements oak well:

oak forms a durable frame and slow litter;

elm accelerates the turnover of nutrients;

linden stabilizes soft humus;

Ash enhances mineral metabolism;

The maple closes the forest windows.

Relief strengthening

A powerful, branched root system is useful:

on the banks;

in the ravines;

on the lower parts of the slopes;

on river terraces;

near temporary streams.

However, elm should not be considered a universal remedy against landslides: the choice of species depends on the soil depth and water regime.

Early nutrition of animals

Elm trees bloom very early, often before the leaves emerge. Their seeds ripen in spring or early summer and are used by birds and small mammals. The leaves and wood support specialized insects, lichens, and fungi.

Cavities and old wood

Old elms form:

cracks;

hollows;

areas of dying wood;

shelters for birds and bats;

substrate for fungi and saproxylic insects.

Dutch elm disease

Dutch disease is caused by fungi of the genusOphiostoma, especially aggressive lookingOphiostoma novo-ulmiThe fungus penetrates the water supply system, disrupts water transport, and causes the wilting and death of branches or the entire tree. The main vectors are elm bark beetles.Forest Research)

Typical symptoms:

sudden wilting of one part of the crown;

yellowing or browning of leaves in summer;

bending of young branches downwards;

brown streaks in the outer wood under the bark;

gradual spread from a single branch to the trunk.

There is usually no completely effective treatment for an infected mature tree. Removing infected branches or trees can slow the spread of the disease, especially with systematic monitoring of the area.Forest Research)

What to do when landing

Do not create pure elm alleys or monocultures.

Use several genetically different trees.

Prefer local planting material.

Maintain old healthy elms as potentially resistant genotypes.

Do not transport untreated elm timber with bark from infested areas.

Use resistant selective clones primarily in urban plantings, rather than as a complete replacement for natural populations.

Plant elms as individual trees and in small groups among other species.

Siberian Elm: Beneficial but Requires Control

Elm tree— one of the most frost-, heat-, and drought-resistant elms. It can grow in poor soils and is used in shelterbelts and breeding programs.

Advantages:

rapid growth;

high frost resistance;

good drought resistance;

wind tolerance;

some resistance to Dutch disease;

value as a parent for stable hybrids.

Flaws:

relatively short life;

brittle branches in some forms;

weak crown architecture;

active self-seeding;

ability to naturalize;

hybridization with local field elm.

It should not be used on a large scale in Switzerland's natural forests. It is more suitable for controlled trials, urban breeding, and extremely dry technical sites.

Chinese small-leaf elm

Elm small-leavedNative to China, Korea, Japan, Taiwan, and Vietnam, it tolerates heat, drought, and urban density well and generally exhibits high resistance to Dutch disease.Plants of the World Online)

Its advantages:

beautiful peeling bark;

small leaves;

strong crown structure;

resistance to urban heat;

good regeneration after pruning;

suitability for streets and parks.

Limitations:

less frost-resistant than European and Siberian species;

alien to the European natural forest;

its ecological connections with the local fauna are weaker;

should not replace native elms in conservation projects.

Compatibility with previously discussed trees

Main tree	Compatibility with elm	The best elm	Benefits of the combination	Possible conflict
English oak	5/5	Smooth or field	Long-lived floodplain forest, fertile soil	An elm can outstrip a young oak
Sessile oak	4/5	Rough or field	Slope forest and soil stabilization	The rough elm may not have enough moisture
Downy oak	3–4/5	Field	Dry limestone forest	Other elms are too moisture-loving
Common ash	5/5	Rough, smooth	Rich ravine and floodplain forests	Both are vulnerable to major epidemics.
Field maple	5/5	Field elm	Warm limestone forest	Excessive density of the second tier is possible
Sycamore	5/5	Rough elm	Cool, damp slopes	Strong general shading
Maple tree	4/5	Rough or field	Fertile mixed forest	Competition for the top tier
Small-leaved linden	5/5	Field or rough	Soft humus, stable second tier	Linden can suppress elm undergrowth
Large-leaved linden	5/5	Rough	Ideal wet slope complex	Rich soil is required
Hornbeam	4/5	Field	The second tier of oak forest	Hornbeam is capable of providing a lot of shade.

The best companion trees for elm

Satellite	Where to combine	Function
English oak	Floodplains and fresh plains	Durable frame
Sessile oak	Drained slopes	Durable top tier
Ash tree	Ravines and rich valleys	Light crown, mineral exchange
Large-leaved linden	Wet limestone slopes	Humus and microclimate
Small-leaved linden	Fresh Plains	Second tier
Sycamore	Cool ravines	Filling the upper tier
Field maple	Warm forest edges	Second tier
Black alder	Wet depressions	Nitrogen and floodplain restoration
White willow	Low floodplains	Rapid shore consolidation
Merry	Drained fertile areas	Flowers and fruits
Rowan	Cool slopes	Fruits and intermediate tier
Birch	Disturbed lands	Temporary protective canopy

Shrubs for elm undergrowth

Bush	The best conditions	Role
Hazelnut	Rich fresh soil	Nuts, undergrowth, soft humus
Viburnum arvensis	Wet places	Fruits and soil protection
Blood-red dogwood	Fresh and calcareous soils	Strengthening slopes
European spindle tree	Rich forest soil	Fruits and structural undergrowth
Hawthorn	Light edge	Pollinators, fruits, protection of young plants
Black elderberry	Nitrogen-rich areas	Rapid recycling of organic matter
Cherry tree	Floodplain and wet valley	Flowers, fruits, coastal undergrowth
Buckthorn brittle	Wet acidic areas	Insects and birds
Privet	Warm, well-drained areas	Dense dry fluff
Wild honeysuckle	Penumbra	Vertical structure and shelters
Rose hip	The bright edge of the forest	Fruits and pollinators
Turn	Dry outer fringe	Protection and early flowering

Selecting an elm based on conditions

Plot	Recommended view
Cool damp slope	Rough elm
Mountain ravine	Rough elm
Floodplain with regular floods	Smooth elm
River bank	Smooth elm
Warm plain	Field elm
Dry limestone slope	Field elm
Forest-steppe	Field elm
Very cold and dry area	Siberian elm - only in a controlled manner
Hot urban area	Small-leaved Chinese or resistant hybrid
Alley	A stable breeding variety
Natural forest of Switzerland	Local U. glabra, U. minor and U. laevis
Permanent swamp	Alder and willow are better
Sea coast with salty aerosol	Only in the protected inner row

A practical priority for Switzerland

Priority	View	Role	Recommended share
1	Rough elm	Wet slopes, ravines, mountain forests	2–5%
2	Field elm	Warm plains, forest edges, calcareous soils	2–5%
3	Smooth elm	Floodplains and restoration of rare local populations	1–3%
4	Resistant European-Asian hybrids	Streets, parks, experimental sites	Limited
5	Siberian and Chinese elms	Arboretums and climate testing	Usually less than 1%

It is especially important to preserve and propagate the local smooth elm: its natural Swiss population is extremely small, and the species itself has a unique specialization for floodplain conditions.infoflora.ch)

The optimal role of the elm in the forest DREVO

Elm is best used asstructural tree of valleys and slopes, and not as a dominant monoculture:

oak is a durable frame;

elm - strengthening the relief and fertile upper tier;

Ash - light and fast mineral exchange;

linden - humus and stable microclimate;

maple - filling forest windows;

hornbeam - adjustable second tier;

Shrubs - protection, fruits and variety.

For a typical mixed broadleaf forest, the total proportion of elms can be3–8%, and in the floodplain or ravine microzone - locally up to10–15%Elms are best planted individually and in small, genetically diverse groups: this reduces the risk of losing all trees at once to Dutch disease.

Illustration из исходного документа — Illustration 38