Students for Stewardship The Cork Board
← Back to the library

Caucasian Ash

Fraxinus angustifolia (FRAK-si-nus an-gus-ti-FOH-lee-uh ok-see-KAR-puh)

Family: Oleaceae Non-native Canopy (>40 ft)

Desert ash is a small, deciduous, flowering tree in the olive family (Oleaceae) that is drought-tolerant and makes an excellent street tree. In nature, it is native to the countries surrounding the Mediterranean and is often found in dry, rocky sites in pine or mixed forests. The specific epithet means “narrow leaves,” and the subspecific epithet means “sour fruit.” Desert ash It grows best in full sun in dry or moist soil, but does not do well in shade. The plant tolerates strong winds and atmospheric pollution, but not maritime exposure. It is often planted as an ornamental, but it also makes a good shade tree. However, the plant does suffer a little from very brittle branches. Insects, Diseases, and Other Plant Problems: Very resistant to insect and disease problems. Vigorous root growth can lead to maintenance problems, especially in areas around hardscaping. See potential problem factsheets to the left. More information on Fraxinus .

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 41 attributes.

How it fits the guild

Guild layer 1 - Canopy (>40 ft) Optimal soil pH Acid (<6.0); Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Full plant profile

Growing Conditions
Plant type
Perennial; Tree
Life cycle
Woody
USDA zones
5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Light
Full sun (6 or more hours of direct sunlight a day)
Soil texture
Clay; Loam (Silt); Sand
Soil pH
Acid (<6.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Occasionally Dry
Mature size
Height: 20 ft. 0 in. - 40 ft. 0 in. | Width: 8 ft. 0 in. - 10 ft. 0 in.
Growth rate
Medium
Maintenance
Low
Canopy layer
1 - Canopy (>40 ft)
Form & Appearance
Habit / form
Rounded
Foliage
Deciduous
Leaf arrangement
Opposite
Hairs present
No
Leaf detail
Leaves consist of 3 to 9 slender leaflets with white hairs on the lower half of the midribs.
Flower value
Showy
Flower size
< 1 inch
Flower detail
Tiny flowers bloom late winter to early spring.
Bloom time
Spring; Winter
Fruit type
Samara
Wildlife & Ecology
Native status
Non-native
Origin
Southern Europe, Norhtwest Africa
Wildlife value
Birds use the tree for cover and nest sites.
Food & Medicine
Fruit type
Samara
Landscape Use
Landscape location
Lawn
Landscape theme
Drought Tolerant Garden
Design feature
Shade Tree; Small Tree; Street Tree
Garden tags
#showy flowers #deciduous #street tree #drought tolerant #small tree #deer resistant #deciduous tree #urban conditions tolerant #fall interest #wildlife friendly #winter cover #nesting site
Problems & Resistance
Insect problems
Common Insect Pests of Ash in North Carolina; Ash Flower Gall Mite
Disease problems
Diseases of Ash Trees in North Carolina
Problems
Weak Wood
Resistant to
Deer; Diseases; Drought; Insect Pests; Pollution; Urban Conditions; Wind
Propagation
Seed
Fire risk
low flammability

Planted at Hunnicutt

Nobody’s planted this one yet.