Willows are mainly insect-pollinated, but the pollen can become airborne since they are small and numerous. The pussy willow, with its showy flowers and strong nectar, is not considered an important allergen. It is found throughout North America. Some of the less showy willows, such as the black willow, produce copious amounts of pollen, which become airborne consequently many are observed on air samples. These can cause allergic reactions in sensitized individuals though they are not considered important allergens.
Last Updated: 14 October 2009
The information presented here is designed to inform, not replace, the relationship that exists between a patient and a medical professional.