Hybrid sunflowers are largely self-pollinating, but insect activity can increase seed yield. Most insecticides labeled for sunflowers are highly toxic to bees, so pest management programs should be conducted to prevent bee mortality. Spray applications should be restricted to very early morning or, preferably, late evening. Insecticides should not be applied to sunflowers in bloom until area beekeepers have been notified and allowed to remove bee hives from the area.
