Ulmus Species, Cedar Elm, Fall Elm, Olmo, Scrub Elm, Southern Rock Elm, Texas Cedar Elm

Ulmuscrassifolia

Family
Ulmaceae (ulm-AY-see-ee)
Genus
Ulmus (ULM-us)
Species
crassifolia (krass-ih-FOH-lee-uh)
Synonym
Ulmus monterreyensis
Ulmus opaca
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Grown for foliage
Evergreen
Deciduous
Height
30-40 ft. (9-12 m)
over 40 ft. (12 m)
Spacing
15-20 ft. (4.7-6 m)
Hardiness
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Danger
Pollen may cause allergic reaction
Bloom Color
Fuchsia (red-purple)
Red
Pale Green
Inconspicuous/none
Bloom Time
Late Summer/Early Fall
Other Details
Category
Trees
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
8.6 to 9.0 (strongly alkaline)
Patent Information
Propagation Methods
From herbaceous stem cuttings
From softwood cuttings
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
From seed; sow indoors before last frost
From seed; direct sow after last frost
By simple layering
By air layering
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Lisle, Illinois

Blue Diamond, Nevada

Arlington, Texas

Austin, Texas

Brownsville, Texas

Cedar Park, Texas

Converse, Texas

Kurten, Texas

Richmond, Texas

Round Rock, Texas

San Antonio, Texas(3 reports)

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Gardener's Notes:

4
positives
0
neutral
1
negative
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I
Weatherford, TX | May 2020 | negative

The house we bought had 2 in the backyard. At first we loved these trees but the seedlings are a nightmare. By the time you can see them,...Read More

V
(Zone 8a) | August 2018 | positive

Gorgeous, tall tree. While native, it is not common in Harris or Ft Bend counties and certainly not as common as other elms.

R
Downingtown, PA | September 2017 | positive

I did not expect to find two Cedar Elms planted at Morton Arboretum in Lisle, IL in the Elm Collection. This species is native from Missi...Read More

R
Austin, TX (Zone 8b) | December 2008 | positive

Very well-adapted to Central Texas. They tend to grow naturally alongside ashe juniper ("cedar"), which is where their name comes from. T...Read More

M
M
San Antonio, TX (Zone 9a) | January 2005 | positive

Very common in South Bexar Country. When clearing brushy land, I tend to leave the cedar elms and mesquites and destroying all the hackb...Read More

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