How much sun does Herbwilliam need?

Herbwilliam grows best in part sun conditions.

When does Herbwilliam bloom?

Herbwilliam blooms in June, July, and August.

Where is Herbwilliam native?

Herbwilliam (Ptilimnium capillaceum) is native to AL, AR, CT, DE and 18 more states, per the USDA PLANTS Database and regional native plant society lists.

What pollinators does Herbwilliam attract?

Herbwilliam draws bees, beetles, and flies.

Is Herbwilliam HOA-friendly?

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

Herbwilliam

Name: Pollinator Patch
Author: Pollinator Patch

Ptilimnium capillaceum

Last reviewed: July 2026

Light

part sun

Water

medium

Size

12"–24" H × 6"–12" W

Bloom

Jun, Jul, Aug

Native to

AL, AR, CT, DE and 18 more states

Pollinators

bees, beetles, flies

Browse plants for this ecoregion

Central Oklahoma/Texas Plains Texas Blackland Prairies East Central Texas Plains Western Gulf Coastal Plain South Central Plains

Mock bishop's weed is a delicate annual wildflower with feathery, thread-like foliage and small white flowers arranged in flat-topped clusters. It grows in a compact, upright form and blooms throughout the summer months. This native plant thrives in partial sun with moderate moisture.

In an HOA neighborhood

Herbwilliam 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.

Fine foliage can appear weedy or unkempt
Annual nature means gaps in planting each year
Small size and delicate appearance may look like volunteer weed

Wildlife value

The small white flowers attract a variety of beneficial insects including native bees, beetles, and flies. Its summer-long bloom period provides consistent nectar sources for pollinators.

Common questions

How much sun does Herbwilliam need?: Herbwilliam grows best in part sun conditions.
When does Herbwilliam bloom?: Herbwilliam blooms in June, July, and August.
Where is Herbwilliam native?: Herbwilliam (Ptilimnium capillaceum) is native to AL, AR, CT, DE and 18 more states, per the USDA PLANTS Database and regional native plant society lists.
What pollinators does Herbwilliam attract?: Herbwilliam draws bees, beetles, and flies.
Is Herbwilliam HOA-friendly?: Herbwilliam 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 Herbwilliam? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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