Psidium guajava L.

This evergreen tree reaches heights of 8 m. It invades disturbed sites and forms dense thickets. The leaves are suspected of allelopathic activity. The seeds are dispersed by alien frugivorous birds as well as rats and feral pigs. Guava can survive moderately intense fires by regenerating from basal sprouts. It has not been evaluated for biological control and is unlikely to be because of commercial orchards on Kaua'i and Hawai'i.

It is distributed in mesic to wet areas below 500 m on all major islands, and in gulches, even in dry areas.

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