Monarch butterflies finding abundant milkweed on which to lay their eggs in many areas this spring: Reproducing the generations over the summer and early fall requires several species of milkweed to get enough moisture and sunlight to remain healthy and provide its leaves, stems and even seed pods for the caterpillars

Milkweed photos galore at Flickr.
Yesterday's numerous photos of Asclepias viridis (the so-called spider milkweed or antelope horns milkweed) are at the opening page. Other species may be found at the Asclepias set on Flickr