Rolled oats!!! Well that's what I call these seeds that come off the huge elms that are across the street. This year there seems to be more than usual and so far we have had 3 dumpings of them. The latest was Friday evening, when a storm was blowing up from the west and the air was thick with these things. I've hosed them off the patio, used the leaf blower on them, and swept them up. They're in the lawn, the garden, the flower beds, in the sidewalk cracks, eavestroughs, everywhere!! But on the bright side, they don't seem to root--unlike those *^#* seeds from Manitoba maples. If you don't pick them when they are tiny seedings, you will never get them out!!! But that's another blog post!!