These are the female flowers, getting ready to release their seeds to the wind. The male flowers are more yellow and without the long tassels. In another month they will be creating snowdrifts in the wash. I saw another sort of white-green flower in clusters on a plant with narrow cylindrical soft green leaves.
Yesterday Rick and I saw a possible pair of Cooper’s Hawks, and today as we came back there was a Harris’s Hawk on the TV antenna.