Black Hawthorn vs Diamond-Leaf Willow - TreeTime.ca

Black Hawthorn vs Diamond-Leaf Willow

Salix planifolia

Crataegus douglasii

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Diamond-Leaf Willow
Black Hawthorn

Diamond-Leaf Willow is a native deciduous shrub known for its glossy diamond-shaped leaves, which give the shrub its name. Its catkins emerge in spring, providing an important early source of pollen for pollinators. The shrub’s dense growth also offers valuable cover and browse for wildlife, including moose and deer.

This shrub is well-suited to cool, moist habitats such as wetlands, streambanks, and forest openings. It spreads by rhizomes, helping to stabilize soils and form dense thickets. Diamond-Leaf Willow is valuable for reclamation, wetland enhancement, shelterbelt plantings, and a wide range of conservation and habitat restoration projects.

Black Hawthorn is a versatile plant that is native to wetlands and other areas with moist soils, but can also tolerate dry soils. This plant can be grown as a short shrub, or a tree reaching 30 feet tall.

Black Hawthorn is valued for erosion control and attracting pollinators. It also makes an attractive flowering ornamental that can be planted as a specimen or pruned as a hedge. It is commonly used in shelterbelts.

Diamond-Leaf Willow Quick Facts

Black Hawthorn Quick Facts

Zone: 1a
Zone: 3a
Height: 1.8 m (6 ft)
Height: 8 m (25 ft)
Spread: 1.5 m (5 ft)
Spread: 5 m (15 ft)
Light: full sun
Light: partial shade, full sun
Moisture: wet
Moisture: any
Growth rate: fast
Growth rate: medium
Life span: medium
Life span: medium
Growth form: upright to spreading, ticket-forming
Spreading: seeds - medium, layering - low
Suckering: medium


Foliage: contains thorns
Fall colour: yellow to red
Bark: smooth, dark brown
Bark: brown to gray
Flowers: white
Berries: purplish-black pomes
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NL, YT, NT, NU
Native to: AB, BC, SK, ON
Other Names: diamondleaf willow, flat-leaved willow, mountain willow, plane-leaf willow, plane-leaved willow, tea-leaf willow, tea-leaved willow
Other Names: crataegus columbiana, douglas hawthorn, douglas' thornapple