Scientific Name:
Crataegus
x
lavallei
Pronunciation:
kruh-TEE-gus ex lah-VALL-eye-ee
Common Name:
Lavalle hawthorn
Family Name:
Rosaceae
Plant Type:
Tree - deciduous
Key ID Features:
Leaves alternate, elliptic to obovate, most blades 5-10cm long x 3-4cm wide, irregularly toothed (less commonly entire and undulate), dark green then bronze red in fall; corymbs 4-9cm wide, florets white, 1.7-2.2cm wide, fragrance unpleasant, May-Jun; pomes broadly oval 10-14mm wide, ripen to orange-red in Sep-Oct. Winter ID: some twigs with thorns 2-5cm long; persistent fruit.
Habit:
Upright
Form:
Oval - vertical
Texture:
Medium
Mature Height:
7 - 10m
Mature Spread:
5 - 7m
Growth Rate:
Moderate
Origin:
Garden origin (C. stipulacea x C. crus-galli)
Hardiness Rating:
Zone 5: (-29 to -23 °C)
Exposure:
Full sun
Soil/Growing Medium:
Well-drained
Water Use:
Low
Landscape Uses:
Accent plant, Attract birds, Hedge row, Screening, Specimen plant, Wildlife food
Additional Info:
Leaf Morphology:
Form:
Simple
Arrangement:
Alternate
Texture/Venation:
Soft flexible, Pinnate venation
Surfaces:
Glabrous, Lustrous
Colour in Summer:
Green, Dark-green
Colour in Fall:
Bronze
Shapes:
Elliptic, Obovate
Apices:
Acute
Bases:
Cuneate
Margins:
Serrate
Inflorescence Type:
Cyme, Corymb-like
Flower Morphology:
Flowers perfect
Number Of Petals:
5
Corolla Shape:
Rotate/stellate
Ovary Position:
Inferior
Colour (petals):
White
Flower Scent:
Unpleasant
Flower Time at Peak:
May, Jun
Fruit Type:
Edible, Pome
Fruit Colour:
Orange, Red
Fruiting Time:
Sep, Oct
Additional Info:
Showy, Edible, Persistent, Up to 5 pyrenes (seed + hard endocarp)
Bark Morphology:
Exfoliating, Plated
Bark or Stem Colour:
Grey, Orange, Brown
Leaf Bud Type:
Ovoid, Rounded or globular
Leaf Scar Shape:
U-shaped
Organ Modifications:
Thorns
Propagation:
Cuttings, Grafting
Maintenance:
Medium
Pest Susceptibility:
Aphids or adelgids, Caterpillar or cutworm, Fungal leaf spot, Heteroptera - true bugs, Leaf miner insect, Mildew, Mites, Scale insects (Drought tolerant)
Course(s):
- HORT 2355
Location(s):
- (LTW) Langley Township Walk : Douglas Park
- (TFL) Turf Field Lab
- (TFLN) Turf Field Lab North