Pembina Plum vs Lewis Mock Orange - TreeTime.ca

Pembina Plum vs Lewis Mock Orange

Philadelphus lewisii

Prunus nigra x salicina Pembina

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Lewis Mock Orange
Pembina 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.

Pembina Plum is one of the best-tasting plums that can be planted on the prairies. It is semi-freestone with orange flesh that is soft, juicy, and sweet which contrasts with the thick, sour, dark red skin. The plums can grow up to 5 cm in diameter and are well-suited for fresh eating, baking, and preserves.

They typically ripen in mid to late August and should be picked as soon as they are ripe. If left too long, the fruit will fall off the tree.

Pembina Plum is a hybrid between Canada Plum and Japanese Plum. For fruit production, it needs to be planted with another variety for cross-pollination. Canada Plum and American Plum are considered universal pollinizers.

Lewis Mock Orange Quick Facts

Pembina Plum Quick Facts

Zone: 4a
Zone: 2b
Height: 3 m (10 ft)
Height: 4 m (14 ft)
Spread: 2.4 m (8 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: partial shade, full sun
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: medium


Fall colour: yellow to orange
Flowers: fragrant, white
Flowers: white
Bloom time: mid spring to early summer
Fruit: purple-red skin with yellow flesh
Hybrid: no
Hybrid: yes
Catkins: no
Catkins: no


Native to: AB, BC
Other Names: california mock orange, lewis mockorange, western mock orange, western syringa, wild mock orange