08/17/2026
IOWANS OF IMPACT
Ada Hayden - born on this date, August 16, 1884.
Ada Hayden was born just north of Ames at a time when the native prairie that had once covered most of Iowa was rapidly disappearing. She grew up on her family's 80-acre farm, where prairie stretched north of the house toward nearby wetlands. It was there that she first became familiar with the native grasses and wildflowers that would eventually shape her career and lead her to become one of Iowa's most important early conservationists.
While attending Ames High School, Hayden met Iowa State College botanist Louis Pammel, who recognized her interest in the natural world and encouraged her to pursue botany. After graduating with honors in 1904, she entered Iowa State, where she was an honor student, class officer, member of a literary society and member of the women's basketball team. She earned her bachelor's degree in botany in 1908, followed by a master's degree from Washington University in St. Louis in 1910. In 1918, Hayden became the first woman to earn a Ph.D. from Iowa State.
Hayden eventually joined the Iowa State faculty, where she combined her scientific work with considerable talents as a writer, artist and photographer. She assisted Pammel with publications, produced botanical illustrations and photographed Iowa plant life. In the early 1920s, she helped prepare instructional lantern slides for the Botany Department, often taking and hand-coloring the photographs herself. She later became assistant curator of Iowa State's herbarium and is credited with adding more than 40,000 carefully documented plant specimens to its collection.
Her work increasingly took her into the field, where Hayden saw firsthand how little remained of Iowa's original prairie. She traveled across the state locating and documenting surviving remnants, recording their plants and making recommendations for their preservation. Convincing people to protect prairie was not always easy. Unlike state parks offering fishing, boating, camping and other recreation, an untouched patch of grass could be difficult for the public to appreciate. Hayden understood that these remnants represented complex ecosystems and surviving pieces of the landscape that had defined Iowa for thousands of years. Her efforts ultimately helped secure protection for 26 prairie areas.
There was some irony in Hayden's work to preserve Iowa's landscape. The family farm where she had first developed her love of native plants became hers in 1914, but financial circumstances forced her to sell it in 1941. She nevertheless continued her conservation work until near the end of her life. Hayden died at Mary Greeley Hospital on August 12, 1950, right before her 66th birthday, and was buried in the Ames Municipal Cemetery.
Her work was increasingly recognized in the decades that followed. Hayden was inducted into the Iowa Conservation Hall of Fame in 1967, Iowa State's herbarium was named in her honor in 1987, and both the Ada Hayden Prairie State Preserve in Howard County and the 437-acre Ada Hayden Heritage Park in Ames carry her name today. More important than any of those honors are the pieces of native Iowa prairie that remain. Hayden understood that Iowa's history was not found only in buildings, photographs and written records, but in the landscape itself. Thanks in part to her determination to document and protect it, portions of that landscape survive for us to experience today.
Story County Genealogical Society, Story County Historical Alliance, Story County, Iowa, Ames History Museum, Iowa State University, Iowa State University Extension and Outreach, University Museums, Iowa State University, Howard County Iowa