Fireweed vs Lewis Mock Orange - TreeTime.ca

Fireweed vs Lewis Mock Orange

Philadelphus lewisii

Chamaenerion angustifolium (Epilobium angustifolium)

COMING SOON

(new stock expected: fall of 2026)

CUSTOM GROW

Lewis Mock Orange
Fireweed

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.

Fireweed is a native perennial wildflower known for its tall spikes of bright pink to purple blooms. Its long-lasting summer flowers are an important nectar source for pollinators such as bees, butterflies, and hummingbirds, while its seeds provide food for birds. Its showy, long-lasting display makes it visually striking in naturalized plantings.

Fireweed gets its namesake because it is often one of the first species to return after wildfires, supporting ecosystem recovery. Its wind-dispersed seeds allow it to spread readily, making it highly effective in large-scale restoration, revegetation, and naturalization projects.
Fireweed is the Provincial Flower of the Yukon.

Lewis Mock Orange Quick Facts

Fireweed Quick Facts

Zone: 4a
Zone: 1a
Height: 3 m (10 ft)
Height: 1.2 m (4 ft)
Spread: 2.4 m (8 ft)
Spread: 0.6 m (2.0 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal, wet
Growth rate: medium
Growth rate: fast
Life span: medium
Life span: short
Growth form: upright to arching, multi-stemmed
Growth form: upright, dense, colony-forming
Spreading: suckering - medium, seeds - low
Spreading: seeds - high, rhizomes - high
Maintenance: medium


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


Native to: AB, BC
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Other Names: california mock orange, lewis mockorange, western mock orange, western syringa, wild mock orange
Other Names: fire weed, great willowherb, rosebay willowherb, willow herb