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Zygophyllaceae (Guaiacum)



Guaiacum (officinale)


Zygophyllaceae

Caltrop Family


Guaiacum

officinale














Lignum vitae

GAUOFF

St. Thomas

G. officinale is found in the West Indies from the Greaten Antilles through to Bonaire, and Aruba; also in Panama, Colombia and Venezuela.It is planted as an ornamental from south Florida to Trinidad and elsewhere.


plants

seed

Container (plug)


0


Collect ripe seeds from the tree leaving the red aril in place.

Seeds were planted the same day collected and aril was not removed.

Plant seeds in germination trays using a light commercial potting soil.
seeds germinate within a month.
Germination Percent: Germination percentages may vary, but rates of at least 50 or 60% can be expected.


After germination, seedlings are removed from the tray when they have 4 to 6 leaves and are transplanted into individual containers.
Seedlings are planted in 4 inch pots with a mix of local and commercial soil. Fertilization starts after the plants are producing new leaves and not experiencing transplant shock. Seedlings should be grown in full sun.


Seedlings are transplanted from the four inch potsin 7 months to 1 gallon containers using the same soil mixture.







G. officinale is scarce in the wild on St. Thomas. Trees are primarily older plantings in parks and older properties. In St. Croix this tree is spreading from landscape plantings into wild area in the east end.

Little and Wadsworth. 1964. Common Trees of Puerto Rico and the Virgin Islands. Agricultural Handbook no. 249. USDA Forest Service. Washington, D.C. pp54

Neuburger, Jackie. 2003. Propagation protocol for production of Container (plug) Guaiacum officinale plants Propagacian de plantas St. Thomas, Virgin Islands. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/07/16). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.