Does pineapple have cross or self pollination?
According to this report prepared for the Australian government the pineapple is self-fertile but may be cross-pollinated by humans, hummingbirds, and insects. Many wild species open their flowers only at night and are pollinated by bats. Fruit development is parthenocarpic, which means fruit develops even if the flower isn’t fertilised. http://www.ogtr.gov.au/pdf/ir/pineapple.
