FNPS Plant Database

Zanthoxylum clava-herculis

Hercules-club
  • Photo by: Shirley Denton, Suncoast Chapter FNPS
  • Photo by: Shirley Denton, Suncoast Chapter FNPS
  • Photo by: Shirley Denton, Suncoast Chapter FNPS
  • Photo by: Shirley Denton, Suncoast Chapter FNPS
  • Photo by: Dick Diener

Nomenclature

Common Name:

Hercules-club

Synonym(s):

Genus species:

Zanthoxylum clava-herculis

Family:

Rutaceae

Plant Specifics

Form:

Tree

Size:

10–25 (50) ft tall by 10–25 ft wide

Life Span:

Long-lived perennial

Flower Color:

white

Fruit Color:

yellow

Phenology:

Deciduous. Blooms in spring. Fruit ripens in fall

Noted For:

Showy Flowers, Thorns, Interesting Foliage, Interesting Bark

Landscaping

Recommended Uses:

Specimen tree.

Considerations:

Quite thorny.

Availability:

Native Nurseries, Seed

Propagation:

Seed.

Light:

Full Sun, Part Sun

Moisture Tolerance:

Always Flooded---------------------------------Extremely Dry

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Usually moist, occasional inundation -to- Somewhat long very dry periods

Salt Water Flooding Tolerance:

Unknown

Salt Spray/Salty Soil Tolerance:

Moderate. Tolerant of salty wind and may get some salt spray

Soil or Other Substrate:

Sand, Clay, Loam

Soil pH:

Suitable to Grow In:

8A,8B,9A,9B

USDA zones are based on the average annual extreme minimum winter temperature.

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Vouchered In:

Distribution
Vouchered
Not vouchered
Selected
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No county distribution is available for this plant yet.
Starting…
Map coded by Melissa Fernandez-de Cespedes (Paynes Prairie Chapter)

Ecology

Wildlife:

Caterpillars, Birds, Mammals

Larval host for giant swallowtail (Papilio cresphontes).

Birds and other wildlife eat the fruit.

Native Habitats:

Hammocks, wet woods, dunes, shell middens

Natural Range in Florida:

Comments:

Ethnobotany:

The bitter aromatic bark was used for toothaches.

General Comments:

Wood is quite soft and weak. This author had one break in a storm. It did however resprout from low on the trunk and the sprout is now about 15 ft tal.
FNPS Plant Print

Citations:

Gann, G.D., C.J. Abbott, C.G. Stocking, K.N. Hines, and collaborators. (2001+). Hercules' Club [in] Natives For Your Neighborhood. ( https://www.regionalconservation.org/beta/nfyn/plantdetail.asp?tx=Zantclav ). Accessed 2026. The Institute for Regional Conservation. Delray Beach, FL.


Minno, Marc, and Maria Minno. (1999). Florida Butterfly Gardening: A Complete Guide to Attracting, Identifying, and Enjoying Butterflies. University Press of Florida, Gainesville, FL.


Traas, Pamela. (2001). Gardening for Florida's Butterflies. Great Outdoors Publishing Co., St. Petersburg, FL.


Osorio, Rufino. (2001). A Gardener's Guide to Florida's Native Plants. University Press of Florida, Gainesville, FL.


Wunderlin, R. P., B. F. Hansen, A. R. Franck, and F. B. Essig. (1999+). Atlas of Florida Plants. ( https://florida.plantatlas.usf.edu/ ). [S. M. Landry and K. N. Campbell (application development), USF Water Institute.] Institute for Systematic Botany, University of South Florida, Tampa, FL.

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