Editing Euterpe oleracea (section)

=== Seasonal changes ===

Flowering occurs year-round with a peak from January to May in the Central Amazon, matching the rainy season; fruit set and development continue into the drier months of the year. <sup>[[#cite_note-11|[11]]]</sup> In northeastern Pará the main harvest runs about July–December, with a smaller January–June off-season crop. <sup>[[#cite_note-4|[4]]]</sup><sup>[[#cite_note-5|[5]]]</sup> Traditional materials concentrate most of their annual yield between July and January, whereas the cultivar BRS Pai d'Égua rebalances production to 46% in January–June and 54% in July–December. <sup>[[#cite_note-4|[4]]]</sup> On terra firme, irrigation through the dry season is the critical input; <sup>[[#cite_note-5|[5]]]</sup> on floodplain sites, palms stand in rising river water through the wet season as part of the natural rhythm. <sup>[[#cite_note-3|[3]]]</sup><sup>[[#cite_note-2|[2]]]</sup>

Where frost can occur, açaí is cold-sensitive: in one Boca Raton planting only two of twenty seedlings survived a freeze, and the surviving plants went dormant rather than growing through winter. <sup>[[#cite_note-6|[6]]]</sup>