Londoners Growing Rare Wildflowers at Home to Save Species

Londoners are turning their homes into conservation labs to rescue a wildflower teetering on the edge of disappearing from the city forever.

Conservation group Citizen Zoo has launched an ambitious project asking volunteers to grow tower mustard, a native UK herb that's been reduced to just two surviving sites in London and about 30 across England. The small white flowering plant, which grows about three feet tall, provides vital food for bees, butterflies, and rare moths.

The approach is refreshingly simple. Volunteers will receive seeds from London's remaining tower mustard populations and learn to cultivate them at home. After nurturing the plants through spring and summer, they'll join planting days in autumn to establish new populations at five historic sites across Greater London.

Charlotte Harris, nature conservation manager at Habitats & Heritage, calls it "a unique opportunity to get hands-on in conserving one of London's rarest plants." Her organization is partnering with Citizen Zoo to host a training session in Twickenham on March 14, where volunteers will learn everything they need to become backyard conservationists.

Tower mustard was once common across London. Its steep decline to "near threatened" status on the national red list stems from habitat destruction and changes in how land is managed. Now this community-powered rescue mission aims to reverse decades of loss.

The Ripple Effect

This project represents something bigger than saving one plant species. It's proof that ordinary people can make extraordinary conservation impacts without needing scientific degrees or wilderness expeditions.

Elliot Newton, director of rewilding at Citizen Zoo, emphasizes that urban rewilding requires collaboration between conservation groups, local authorities, and everyday residents. "By putting tower mustard in the spotlight and working together at scale, we can demonstrate how to bring a rare London species back from the brink," he explains.

The model has already proven successful. Citizen Zoo's previous "hop of hope" project enlisted volunteers to rear large marsh grasshoppers at home before releasing them into Norfolk wetlands. The tower mustard initiative marks the organization's first London plant conservation effort, funded by the Mayor of London's Green Roots Fund and Thames Water.

By autumn, London's botanical diversity will be richer thanks to people who decided their windowsills and gardens could become havens for a species fighting to survive.