How much sun does Little Ironweed need?

Little Ironweed grows best in full sun conditions.

When does Little Ironweed bloom?

Little Ironweed blooms in May, June, July, August, September, and October.

Where is Little Ironweed native?

Little Ironweed (Cyanthillium cinereum) is native to FL, per the USDA PLANTS Database and regional native plant society lists.

What pollinators does Little Ironweed attract?

Little Ironweed draws bees, butterflies, and moths.

Is Little Ironweed HOA-friendly?

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

Little Ironweed

Name: Pollinator Patch
Author: Pollinator Patch

Cyanthillium cinereum

Last reviewed: June 2026

Light

full sun

Water

medium

Size

12"–36" H × 12"–24" W

Bloom

May, Jun, Jul, Aug, Sep, Oct

Native to

Pollinators

bees, butterflies, moths

Little ironweed is a compact native perennial that produces clusters of small purple flowers from late spring through fall. This low-growing wildflower forms neat clumps and provides reliable color in sunny gardens with moderate water needs.

In an HOA neighborhood

Little Ironweed 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.

Common name includes 'weed' which creates negative perception
May appear too wild or informal for typical HOA standards
Growth habit could be seen as unstructured

Wildlife value

The long blooming period makes this an excellent nectar source for bees, butterflies, and moths throughout the growing season. Native pollinators particularly value the small but abundant purple flower clusters.

Common questions

How much sun does Little Ironweed need?: Little Ironweed grows best in full sun conditions.
When does Little Ironweed bloom?: Little Ironweed blooms in May, June, July, August, September, and October.
Where is Little Ironweed native?: Little Ironweed (Cyanthillium cinereum) is native to FL, per the USDA PLANTS Database and regional native plant society lists.
What pollinators does Little Ironweed attract?: Little Ironweed draws bees, butterflies, and moths.
Is Little Ironweed HOA-friendly?: Little Ironweed takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Little Ironweed? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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