Showy Mountain Ash vs Lewis Mock Orange - TreeTime.ca

Showy Mountain Ash vs Lewis Mock Orange

Philadelphus lewisii

Sorbus decora

COMING SOON

(new stock expected: fall of 2026)

COMING SOON

(new stock expected: fall of 2026)

Lewis Mock Orange
Showy Mountain Ash

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.

Showy Mountain Ash is a hardy accent tree. It features pretty clusters of white flowers in spring followed by bright scarlet berries lasting into winter.

Great for small landscapes, Showy Mountain Ash is adaptable to both dry and moist locations, and it is suitable for average home landscape conditions.

Lewis Mock Orange Quick Facts

Showy Mountain Ash Quick Facts

Zone: 4a
Zone: 2a
Height: 3 m (10 ft)
Height: 12 m (40 ft)
Spread: 2.4 m (8 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: any
Moisture: dry, normal
Moisture: normal
Growth rate: medium
Growth rate: fast
Life span: medium
Life span: medium
Growth form: upright to arching, multi-stemmed
Spreading: suckering - medium, seeds - low
Suckering: low


Fall colour: reddish-orange
Flowers: fragrant, white
Flowers: white, showy clusters
Bloom time: mid spring to early summer
Berries: redberries in bunches
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC
Native to: SK, MB, ON, QC, NS, NB, NL
Other Names: california mock orange, lewis mockorange, western mock orange, western syringa, wild mock orange
Other Names: dogberry