Katherine Havemeyer Lilac vs Lewis Mock Orange - TreeTime.ca

Katherine Havemeyer Lilac vs Lewis Mock Orange

Philadelphus lewisii

Syringa vulgaris Katherine Havemeyer

COMING SOON

(new stock expected: fall of 2026)

COMING SOON

(new stock expected: fall of 2026)

Lewis Mock Orange
Katherine Havemeyer Lilac

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.

Katherine Havemeyer Lilac is a cold hardy French lilac known for its highly fragrant, double flowers. The buds start as a lavender-purple and give way to soft pink blooms that have double the number of petals compared to other Lilacs. The flowers bloom in late spring and can last up to 3-4 weeks.

The Katherine Havemeyer lilac, like other lilacs, is deer-resistant. The flowers are known for attracting hummingbirds, bees, and other pollinators to your landscape.

Lewis Mock Orange Quick Facts

Katherine Havemeyer Lilac Quick Facts

Zone: 4a
Zone: 3a
Height: 3 m (10 ft)
Height: 4 m (12 ft)
Spread: 2.4 m (8 ft)
Spread: 2.7 m (9 ft)
Light: partial shade, full sun
Light: full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: medium
Growth rate: medium
Life span: medium
Life span: short
Growth form: upright to arching, multi-stemmed
Spreading: suckering - medium, seeds - low
Suckering: medium
Maintenance: medium


Flowers: fragrant, white
Flowers: pink to light purple
Bloom time: mid spring to early summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


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