May is the season of yellow flowers in Palouse. The purple lupine is also in bloom but not as tall as that I see in Northwest coast and certainly not as bright as the yellow balsamroot. Up on the south slope of Steptoe Butte, the dominant flower is balsamroot, which seems more capable of resisting the strong wind that always over the butte. Photographing the flowers on the windy slope is difficult, but a little blur of the foreground flowers do not make a picture less beautiful.
The brilliantly yellow flowers of rapeseed (aka canola) are also in bloom. According to Pullman Chamber of Commerce, 2013 sees the largest planting of canola in Whitman County. Huge patches of canola fields can be seen along Highway 26 near Colfax. On a sunny day, they are so bright that the yellow color tends to be over-saturated in photographs.