Diamond-Leaf Willow vs Red Alder - TreeTime.ca

Diamond-Leaf Willow vs Red Alder

Salix planifolia

Alnus rubra

CUSTOM GROW

CUSTOM GROW

Diamond-Leaf Willow
Red Alder

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.

Red Alder is a fast-growing deciduous tree native to western North America. Its fixes nitrogen, which enriches soils and supports the growth of surrounding plants. Ideal for sites with poor soil conditions, or areas disturbed by logging, construction or fire.
It provides shade in riparian areas, creating cover for fish. Its seeds and buds are eaten by birds and small mammals, while the foliage provides browse for wildlife. The catkins release clouds of pollen attracting bees and other insects.
The Red Alder gets its namesake from the rusty-red color the bark turns when bruised.

Diamond-Leaf Willow Quick Facts

Red Alder Quick Facts

Zone: 1a
Zone: 5b
Height: 1.8 m (6 ft)
Height: 15 m (50 ft)
Spread: 1.5 m (5 ft)
Spread: 9 m (30 ft)
Light: full sun
Light: partial shade, full sun
Moisture: wet
Moisture: normal, wet
Growth rate: fast
Growth rate: fast
Life span: medium
Life span: medium
Growth form: upright to spreading, ticket-forming
Growth form: upright, rounded to conical
Spreading: seeds - medium, layering - low
Spreading: seeds - medium, stump sprouting - medium


Bark: smooth, dark brown
Bark: smooth, grey
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: yes


Native to: AB, BC, SK, MB, ON, QC, NL, YT, NT, NU
Native to: BC
Other Names: diamondleaf willow, flat-leaved willow, mountain willow, plane-leaf willow, plane-leaved willow, tea-leaf willow, tea-leaved willow
Other Names: oregon alder, pacific coast alder, western alder