This story was originally published by Reasons to be Cheerful
8 min read
On Doug Tallamy’s 10-acre property in rural Pennsylvania, the evidence arrives on wings. Wood thrushes now nest in shrubs that were once cut for hay. Luna moths — emerald-green giants that had become increasingly rare — have reached record numbers. Tallamy recounts enthusiastically that he has documented more than 1,380 species of moths on the land, along with 62 breeding bird species. “We hear the birds in the morning. I see the gray tree frog sitting on my window sill,” he raves. “That is a real reward for me.”
When he and his wife Cindy bought the 300-year-old farm in 2000, its surroundings looked green. But when Tallamy walked the property he noticed it was overrun by invasive plants — like the Japanese stiltgrass and the aptly named mile-a-minute-weed, a smothering vine — that supported few pollinators. “There were no caterpillars!” he recalls. That recognition turned him from a researcher with a passion for insects into a passionate advocate for native plants. The transformation of his land didn’t require expensive engineering or high-tech equipment. Tallamy simply weeded out invasives and put native plants back. “I think in the last 26 years we spent about $100,” he says. “Because I simply go get seeds and put them in the ground.”
For more than two decades, the bestselling author and entomologist at the University of Delaware has argued that the biodiversity crisis won’t be solved only in national parks or on other protected lands. It will be solved — or lost — in millions of ordinary backyards and schoolyards, on corporate campuses and apartment balconies. “Nearly 80 percent of land east of the Mississippi is privately owned, and 135 million acres are now in residential landscapes,” he says. “That puts the private property owner in charge of conservation. If 10 to 20 percent of landowners planted native plants, this would add up to a habitat larger than 10 Yellowstones.”
National parks are much needed and beloved, but Tallamy points out that many species migrate beyond their borders and won’t survive if they don’t find sustenance and habitat along the way. “In between protected areas is no man’s land for most creatures and plants,” he says. “All of the parks and preserves, including Yellowstone, are too small and too isolated.” Connecting those islands with habitat on private land, he argues, “is going to be the solution.”
This premise led to his creation of Homegrown National Park, a nonprofit that encourages people to replace conventional lawns with native habitat and register their efforts on a nationwide biodiversity map. The initiative has now grown to over 52,000 registered participants who tend to more than 187,000 acres, figures Tallamy says are rapidly rising. “The real argument is that natural systems are generating your life support,” he urges. “They make your oxygen, they manage your watershed, they minimize extreme weather conditions, sequester carbon to help [mitigate] climate change. They’re doing all kinds of things to keep you alive on this planet.”




