Folks who live in the southeast USA know what this is -- yellow pine pollen. This yellow stuff covers everything for 4 to 6 weeks each spring.
I knew it was out -- this morning I woke with plugged sinuses. Yup, allergies.
But not to the pine pollen; it's supposed to be too large to be an allergen. However, oak pollen and a few others are out at the same time, and I'm mildly allergic to all of 'em!