How much sun does Yaupon Blacksenna need?

Yaupon Blacksenna grows best in part sun conditions.

When does Yaupon Blacksenna bloom?

Yaupon Blacksenna blooms in July, August, September, and October.

Where is Yaupon Blacksenna native?

Yaupon Blacksenna (Seymeria cassioides) is native to AL, AR, FL, GA and 7 more states, per the USDA PLANTS Database and regional native plant society lists.

What pollinators does Yaupon Blacksenna attract?

Yaupon Blacksenna draws bees, butterflies, and beetles.

Is Yaupon Blacksenna HOA-friendly?

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

Yaupon Blacksenna

Name: Pollinator Patch
Author: Pollinator Patch

Seymeria cassioides

Last reviewed: June 2026

Light

part sun

Water

medium

Size

12"–36" H × 6"–24" W

Bloom

Jul, Aug, Sep, Oct

Native to

AL, AR, FL, GA and 7 more states

Pollinators

bees, butterflies, beetles

Browse plants for this ecoregion

South Central Plains

Seymeria cassioides is an annual wildflower that produces delicate yellow blooms from summer through fall. This native forb grows 1-3 feet tall with a somewhat open, branching habit and thrives in partial sun conditions.

In an HOA neighborhood

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

Works well in: backyard only.

Annual growth creates gaps in landscaping
Open branching habit can appear unstructured
May be viewed as weedy by traditional landscaping standards

Wildlife value

Attracts bees, butterflies, and beetles throughout its extended blooming period from July to October. The long flowering season provides valuable late-season nectar when many other plants have finished blooming.

Common questions

How much sun does Yaupon Blacksenna need?: Yaupon Blacksenna grows best in part sun conditions.
When does Yaupon Blacksenna bloom?: Yaupon Blacksenna blooms in July, August, September, and October.
Where is Yaupon Blacksenna native?: Yaupon Blacksenna (Seymeria cassioides) is native to AL, AR, FL, GA and 7 more states, per the USDA PLANTS Database and regional native plant society lists.
What pollinators does Yaupon Blacksenna attract?: Yaupon Blacksenna draws bees, butterflies, and beetles.
Is Yaupon Blacksenna HOA-friendly?: Yaupon Blacksenna 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 Yaupon Blacksenna? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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