When does fireweed bloom?

Fireweed typically blooms from June through September, with flowers opening progressively up the stalk over several weeks.

What pollinators does fireweed attract?

Fireweed flowers draw bees, butterflies, and moths, which visit for nectar throughout the summer bloom period.

How does fireweed behave in a garden setting?

Fireweed spreads readily by rhizomes and windborne seed, so it does best given room to roam or regular division to keep it in bounds.

What growing conditions suit fireweed best?

Fireweed prefers part shade to full sun and steady, medium soil moisture, and it tolerates the disturbed or recently cleared ground it often colonizes first.

Is Fireweed HOA-friendly?

Fireweed takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Fireweed

Name: Pollinator Patch
Author: Pollinator Patch

Chamaenerion angustifolium

Last reviewed: November 2026

Chamaenerion angustifolium, commonly called fireweed, sends up tall spikes of pink to magenta flowers from June through September. It grows well in open, disturbed ground with part shade to full sun and medium moisture.

Watering reminders and freeze alerts for Fireweed, free in the app.

Toxicity unknown

Fireweed (Chamaenerion angustifolium) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

part shade

Water

medium

Size

24"–60" H × 12"–24" W

Bloom

Jun, Jul, Aug, Sep

Native to

AL, AR, AZ, CA and 42 more states

Pollinators

bees, butterflies, moths

Deer

Resistant (per Prairie Moon Nursery)

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Rosebay willowherb is a tall perennial wildflower that produces striking spikes of bright pink-purple flowers from summer through early fall. This native plant forms upright colonies and thrives in partial shade with moderate moisture, making it suitable for naturalized areas and woodland edges.

Growing Fireweed

Grow Fireweed in part shade and medium water. Mature plants reach 24 to 60 inches tall and spread 12 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Fireweed takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

Spreads aggressively and can look weedy
Very tall growth may appear uncontrolled
Common name includes 'weed' which raises HOA concerns

Wildlife value

Host plant for fireweed clearwing moth, bedstraw hawkmoth.

The long blooming period provides nectar for bees, butterflies, and moths throughout the growing season. Seeds also attract birds in late fall.

Common questions

When does fireweed bloom?: Fireweed typically blooms from June through September, with flowers opening progressively up the stalk over several weeks.
What pollinators does fireweed attract?: Fireweed flowers draw bees, butterflies, and moths, which visit for nectar throughout the summer bloom period.
How does fireweed behave in a garden setting?: Fireweed spreads readily by rhizomes and windborne seed, so it does best given room to roam or regular division to keep it in bounds.
What growing conditions suit fireweed best?: Fireweed prefers part shade to full sun and steady, medium soil moisture, and it tolerates the disturbed or recently cleared ground it often colonizes first.
Is Fireweed HOA-friendly?: Fireweed takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

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