In 2004, the pejibaye palm (Bactris gasipaes) was recommended for cultivation in the humid and superhumid zones of Mauritius. This palm re-grows from basal suckers: however, the optimum number of suckers to be kept has not yet been established. A research project of 5-year duration was initiated in March 2005. The objective of the project was to establish the optimum sucker population density of pejibaye palm in order to sustain production on marginal lands.