White Pollen Mystery
If you look on the bottom flower here you can clearly see someone has left behind a trail of while pollen. :) This is ipomoea purpurea or common morning glory. Bindweed, a member of the same family that has smaller white flowers and grows tenatiously also appears to have white pollen. Both are hard in zones 3-8. This picture is from my yard. Here in my neighborhood they are everywhere.