Dear Master Gardener: I have lots of cottonwood fluff in my yard and caught the neighborhood children lighting some of it on fire on their driveway. This looks quite dangerous. Is cottonwood fluff ...

There is an abundance of green flakes coating the sidewalks and cars right now, and it seems hard to avoid the white cottony tufts in the air lately. There's green film on the waters along the shores ...

Cotton-like puffs carry cottonwood seeds back to earth near Scudder Pond in Bellingham. The cottonwoods and other trees of the willow family release their seeds in a show that can resemble springtime ...