Details of...
Scientific Name: Crataegus phaenopyrum
Pronunciation: kruh-TEE-gus fee-noe-PYE-rum
Common Name: Washington hawthorn
Family Name: Rosaceae
Plant Type: Tree - deciduous
Key ID Features: Stems with thorns to 2 cm; leaves to 8 cm long, triangular, irregularly toothed and serrate (even at bases - unlike black hawthorn); flowers white, saucer-shape, May-June; fruit orange berry-like pomes. Winter ID: reddish twigs with thorns, persistent fruit.
Course(s): not used (on campus)

Habit: Arching, Upright
Form: Pyramidal - widely, Round
Texture: Medium
Mature Size:
Height:7 - 10m
Spread:4 - 5m
Growth Rate:Slow
Hardiness Rating: Zone 4: (-34 to -29 C)
Exposure: Full sun
Soil/ Growing Medium: Rocky or gravelly or dry, Well-drained
Water Use: Low
Landscape Uses: Attract birds, Attract butterflies, Erosion control, Fall interest, Hedge row, Herb, Security/barrier, Specimen plant, Spring interest, Wildlife food, Woodland margin
Additional Info: Google
Washington hawthorn
Leaf Morphology: Glossary
Form: Simple
Arrangement: Alternate
Texture/ Venation: Leathery
Surfaces: Lustrous
Colour in Summer: Green, Dark-green
Colour in Fall: Red, Green-yellow, Orange
Leaf(let) Terms:
Shapes: Deltoid, Ovate
Apices: Acute
Bases: Truncate
Margins: Dentate, Serrate

Inflorescence Type: Floriferous, Corymb
Flower Morphology:
Number of Petals:5
Corolla Shape:Rotate/stellate
Colour (petals): Showy, White
Flower Scent: Musky, Unpleasant
Flower Time at Peak: May

Fruit Type: Pome
Fruit Colour: Orange
Fruiting Time: Sep, Oct
Additional Info: Showy, Edible, Persistent, pome small with less than six one-seeded nutlets

Bark Morphology: Multi-stem trunk, Plated
Bark or Stem Colour: Grey
Organ Modifications: Thorns

Propagation: Cuttings, Seed
Pest Susceptibility: Blight or needle cast, Canker or sap rot, Caterpillar or cutworm, Fungal leaf spot, Heteroptera - true bugs, Leaf miner insect, Mildew, Rust, Scale insects, Stem borer insects, ( Deer resistant, Rabbit resistant, Drought resistant )
Specific Pests: Entomosporium leaf spot
(TFL) Turf Field Lab
(TFLN) Turf Field Lab North
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