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Crataegus crus-galli thornless (Thornless cockspur thorn)

Other names: Crataegus crus-galli 'Inermis', Crataegus crus-galli var. inermis, Crataegus crus-galli f. inermis

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Variety or Cultivar
C. crus-galli thornless is a spreading, thornless, deciduous tree with leathery, obovate, toothed, glossy, dark green leaves turning crimson in autumn. Dense corymbs of white flowers in late spring or early summer are followed by spherical, dark red fruit.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
9 m 10.5 m 20-50 years
29 ft 34 ft 20-50 years

Where to grow

Soil type
  • Chalky
  • Clay
  • Loamy
  • Sandy
Soil drainage
  • Moist but well-drained
  • Well-drained
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Partial Shade
  • Full Sun
Aspect
  • East
  • West
  • South
  • North
Exposure
  • Exposed
  • Sheltered

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Additional plant details

Cultivation

Best in moist but well-drained, slightly acid soil in full sun but tolerates a wide range of conditions including poor soil, dry soil, salt spray, drought, and heat. Does not tolerates waterlogged conditions.

Suggested uses

Architectural, Coastal, Beds and borders, Cottage/Informal, City, Hedging/Screens, Wildflower, Wildlife, Specimen tree

UK hardiness

H7

USDA zones

Zone 3, Zone 4, Zone 5, Zone 6, Zone 7

Sunset zone

4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 1, 2, 3

WUCOLS

North-Central Coastal = Moderate/Medium
Central Valley = Moderate/Medium
South Coastal = Moderate/Medium
South Inland = Moderate/Medium
High and Intermediate Desert = Moderate/Medium
Low Desert = Inappropriate

Foliage

Deciduous

Habit

Spreading

Native to

Eastern North America, Central United States, Mexico

Drought tolerant

No

Flood tolerant

No

Toxicity

The fruit can cause mild stomach upset if ingested.

Plant care

Pruning

Pruning group 1

Propagation methods

Grafting, Budding

Pests

Aphids

Caterpillars

Gall mites

Diseases

Fireblight

Honey fungus

Leaf spot

Plant container grown plants in deep fertile, well-drained soil

Selective pruning only (only if needed)

Propagate from grafting in winter (advanced)

Plant in fertile, humus-rich, well-drained soils

Plant container grown plants in a sunny postion

Plant in moist but well-drained soil (autumn or spring)

Plant in full sun or partial shade (autumn or spring)

Propagate by budding in late summer

Plant rootstocks for summer budding

Other plants

Plants in this Genus (0)

Crataegus

Companion plants (0)

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