There are a few species that are clearly exotic and invasive to the Island. These include both woody and viney species, some of which are excellent browse for goats and sheep.

The SARE invasive plants research at the University of the Virgin Islands Agricultural Experiment Station, headed by Stuart Weiss in St. Croix, focuses on controlling coral vine (Antigonon leptopus), an escaped ornamental vine.

Stuart Weiss's SARE-sponsored research focuses on controlling corral vine with St. Croix hair sheep.

Both on farm and pen studies indicate that they are readily eaten by sheep but grow back if no further method of control is used.

A species of future interest on the eastern side of the island is white acacia (Acacia sp.).

Tantan (Leucaena leucocephala) is found on the wetter side of the island and, although readily browsed by sheep, goats and cattle, it can sometimes outgrow their reach and spread by prodigious seed production.