05/01/2022
Hello everyone,
This is an exciting time of the year at the Clark Fork Native Prairie, as different species of plants reemerge and flower. If you quickly scan the prairie, what you notice are mostly yellow flowers! Later on in the summer, the flowering plants display a wider palette of colors, including red, white, blues and a lot more.
So why are so many spring flowers yellow? Fifteen years ago Peter Lessica wrote an interesting story on this in the Montana Naturalist (Spring/Summer 2007 edition). Bumblebees, the sturdy pollination workhorses of later spring and summer, are not around in large numbers yet. This is because only the queens survive the winter, and they are busy raising this year's generation of offspring, which will be the worker bees. Many of the early spring insects that are visiting flowers now are flies and other more generalized pollinators. Studies on insect vision suggest that flies are more sensitive to yellow colors, while later-emerging bees are more attracted to other colors, such as blues; moths prefer evening-blooming white flowers; hummingbirds really dig the red, tubular-shaped flowers.
All these other flowers will show up in the prairie later in the summer, but for now, enjoy the spectacular yellow show, and thank the flies and other generalized pollinators for it.
Cheers, Erick Greene