Yellow Mountain Avens vs Lewis Mock Orange - TreeTime.ca

Yellow Mountain Avens vs Lewis Mock Orange

Dryas drummondii

Philadelphus lewisii

CUSTOM GROW

COMING SOON

(new stock expected: fall of 2026)

Yellow Mountain Avens
Lewis Mock Orange

Yellow Mountain Avens is a native perennial wildflower with bright yellow buttercup-like blooms. The nectar-rich flowers attract a variety of pollinators, including bees and butterflies. By thriving at higher elevations, it helps sustain pollinator populations and provides one of the earliest sources of nectar and pollen in alpine habitats. After the blooms fade, the plant produces silky seed heads that begin as upright, compact tufts and gradually expand into rounded, fluffy clusters, adding texture and interest to the landscape.

As a nitrogen-fixing plant, Yellow Mountain Avens enriches soil fertility and supports the growth of surrounding vegetation. It forms dense, spreading mats of evergreen foliage that act as a groundcover and help stabilize soil. Often among the first species to establish in disturbed alpine sites such as glacial outwash or landslides, it is well-suited for alpine revegetation, erosion control, naturalization, and ecological restoration projects in harsh, rocky environments.

Lewis Mock Orange is a flowering ornamental shrub that produces an abundance of white, fragrant blooms. The flowers have a sweet scent similar to orange blossoms, with a hint of pineapple. They bloom for several weeks from late spring to early summer, attracting pollinators and other beneficial insects.

Native to North America, Lewis Mock Orange is found from the southernmost portions of Alberta and British Columbia, and south into the northwestern United States. It makes an attractive shrub and can be used in hedgerows, pollinator gardens, and naturalization projects. Blooms occur on the previous year’s wood, so it is recommended to prune after it has finished flowering.

Yellow Mountain Avens Quick Facts

Lewis Mock Orange Quick Facts

Zone: 1b
Zone: 4a
Height: 0.2 m (0.5 ft)
Height: 3 m (10 ft)
Spread: 0.3 m (1.0 ft)
Spread: 2.4 m (8 ft)
Light: full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: medium
Growth rate: medium
Life span: short
Life span: medium
Growth form: mat-forming, creeping
Growth form: upright to arching, multi-stemmed
Spreading: stolons - medium, seeds - low
Spreading: suckering - medium, seeds - low


Foliage: evergreen, leathery
Flowers: yellow, buttercup-like, nodding
Flowers: fragrant, white
Bloom time: spring to summer
Bloom time: mid spring to early summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, ON, QC, NB, NL, YT, NT
Native to: AB, BC
Other Names: drummonds dryad, drummonds mountain avens, yellow dryad
Other Names: california mock orange, lewis mockorange, western mock orange, western syringa, wild mock orange