Yaupon Black Senna (Seymeria Cassioides) is a annual herb in the Orobanchaceae family with moderate care difficulty. It requires moderate watering and full sun or partial shade light in USDA hardiness zones 7-9. This plant is safe for cats and dogs.

Seymeria cassioides is an erect, profusely branched, glandular pubescent annual herb with squarish stems, growing up to about 4 feet in height. It features yellow flowers with a distinctive red ring-forming lateral stripe on each petal.

Yaupon Black Senna

Yaupon Black Senna

Seymeria Cassioides

Seymeria cassioides is an erect, profusely branched, glandular pubescent annual herb with squarish stems, growing up to about 4 feet in height. It features yellow flowers with a distinctive red ring-forming lateral stripe on each petal.

Quick Facts

Type
herb
Lifecycle
annual
Care Difficulty
Moderate
Water Needs
Moderate
Light
Full Sun, Partial Shade
Hardiness Zones
7-9

Safety

🐕
Pet Safe
👶
Child Safe
Non-Toxic

Growing Conditions

Soil Types:sandy, loamy, gravelly
Indoor:No
Outdoor:Yes
Garden Use:pollinator attractor, groundcover, restoration plant

Care Calendar

Monthly care tasks for Yaupon Black Senna

Jan
Prune
Feb
Fertilize
Mar
Repot
Apr
Water+
May
...
Jun
...
Jul
...
Aug
...
Sep
...
Oct
...
Nov
...
Dec
...

Expert Care Tips

Pro tips from botanists and plant experts

Watering Tip

Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.

Humidity Trick

Group plants together to create...

Growth Hack

Rotate your plant every...

Photo Gallery10+ photos

Yaupon Black Senna
Yaupon Black Senna detail

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Taxonomy

Family:Orobanchaceae
Genus:Seymeria