2. Cupressaceae (Cedar Family) pollen
5. Morus (Mulberry) pollen
6. Ulmus (Elm) pollen
7. Poaceae (Grass Family) pollen
8. Celtis (Hackberry) pollen
9. Pinaceae (pine family) pollen
10. Fraxinus (ash) pollen
Note: Within the metropolitan Tulsa area, variations in the top ten pollen types may occur due to neighborhood landscaping. In addition, climatic conditions during any one season may promote or reduce pollen production of some pollen types.