Lewis Mock Orange vs American Plum - TreeTime.ca

Lewis Mock Orange vs American Plum

Philadelphus lewisii

Prunus americana

COMING SOON

(new stock expected: fall of 2026)

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Lewis Mock Orange
American Plum

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.

American Plum is a cold-hardy wild plum native to North America that grows as a small tree or large multi-stemmed shrub. Small, firm, red plums ripen from mid to late summer; the skin is tough and tart, whereas the flesh is sweet and juicy. While some enjoy eating them fresh, they are more commonly used for baking and preserves. It is considered a universal pollinizer for other plum varieties and is often used for grafting or as a rootstock.

In spring, American Plum produces abundant white to pink flowers that attract a variety of pollinators, providing an important early-season source of nectar and pollen. It also serves as a host plant for numerous moth and butterfly species. In its native range, it is recognized as an important keystone plant, as it has a disproportionately large impact on local ecosystems.

American Plum tolerates a wide range of soil conditions, from acidic to alkaline, and heavy clay. It is well suited to a variety of projects, including fruit orchards for cross-pollination, as well as pollinator plantings, naturalization, and restoration projects.

Lewis Mock Orange Quick Facts

American Plum Quick Facts

Zone: 4a
Zone: 3a
Height: 3 m (10 ft)
Height: 6 m (20 ft)
Spread: 2.4 m (8 ft)
Spread: 6 m (20 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: medium
Growth rate: fast
Life span: medium
Life span: medium
Growth form: upright to arching, multi-stemmed
Growth form: rounded to spreading, thicket forming
Spreading: suckering - medium, seeds - low
Spreading: suckering - high
Maintenance: medium


Toxicity: leaves, stems, pits contain cyanide
Fall colour: gold to orange
Flowers: fragrant, white
Flowers: fragrant, white
Bloom time: mid spring to early summer
Bloom time: early to mid spring
Fruit: small, red plums
Fruit size: 2-3cm in diameter
Firmness: firm
Harvest: mid to late summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC
Native to: SK, MB, ON
Other Names: california mock orange, lewis mockorange, western mock orange, western syringa, wild mock orange
Other Names: american wild plum, wild plum