As Tulsa temperatures warm up in February, we will begin to see airborne pollen from early spring pollinating trees, especially eastern redcedar (Juniperus virginiana) and American elm (Ulmus americana). Both species produce abundant airborne pollen. We may also see some pollen from silver maple (Acer saccharinum) trees, which are also an early pollinating species, but the concentrations are typically low. Click on the link for more information on February pollen.