Hercule’s Club – Zanthoxylum clava-herculis

Giant Swallowtail host plant, the shrub/tree Hercules’ Club, is a tree that is covered in vicious thorns.

Hercules' Club zanthoxylum clava-herculis Giant Swallowtail Host Plant

Hercules’ Club
Zanthoxylum clava-herculis
Giant Swallowtail Host Plant

Hercules' Club Zanthoxylum clava-herculis Giant Swallowtail Host Plant

Hercules’ Club Trunk Thorn
Size of End of Thumb

Hercules’ Club Zanthoxylum clava-herculis Covered in caterpillars

Hercules’ Club
Covered in Giant Swallowtail
butterfly caterpillars

Hercules' Club Zanthoxylum clava-herculis Tree trunk and a shoe

Hercules’ Club
Zanthoxylum clava-herculis
Tree trunk and a shoe

Hercules' Club Branch thorns are one-half-inch long

Hercules’ Club
Branch thorns are 1/2 inch long

Hercules’ Club<br>Zanthoxylum clava-herculis seed

Hercules’ Club
Zanthoxylum clava-herculis seed

Hercules' Club Zanthoxylum clava-herculis Giant Swallowtail Host Plant

Hercules’ Club
Sometimes has thorns under leaves

US map Hercules' Club Zanthoxylum clava-herculis

US map Hercules’ Club Zanthoxylum clava-herculis

Giant Swallowtail butterfly

Giant Swallowtail butterfly

Zanthoxylum clava-herculis

US native

Average to dry soil

Zones 7-9

Sun to partial shade

Blooms: spring, small white

Height 30′

Width 15-18′

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