Community effort aims to restore a rare London wildflower
More than 1,000 tower mustard plants have been propagated and planted out across London in what organisers describe as a successful first year of a volunteer-led restoration drive. The project, coordinated by conservation charities Citizen Zoo and Habitats & Heritage, brought together land managers, community groups, experts and hundreds of volunteers to re-establish the plant in areas where it once occurred.
The tiny-seeded mustard, which is important for bees, butterflies and specialised moths, was raised by a cohort of community growers dubbed the Mighty Mustard volunteers. Participants attended a sowing workshop in March, received growing kits including pots, seed trays and compost, and nurtured the seedlings through the summer before planting them out at public green spaces.
Where the plants have been reintroduced
Seeds for the project were sourced from the capital’s last remaining wild tower mustard populations, at Lesnes Abbey Woods (Bexley) and Stain Hill Reservoir (Richmond-upon-Thames). The plants raised by volunteers have been planted at several London locations, and the programme concludes with a final planting event at Hampton Court Palace’s Home Park.
| Site | Borough / Land Manager |
|---|---|
| Lesnes Abbey Woods | Bexley |
| Stain Hill Reservoir | Richmond-upon-Thames |
| Wimbledon Common | Wimbledon |
| Hounslow Heath | Hounslow |
| Barnes Common | Richmond Borough (Barnes) |
| Hampton Court Palace Home Park | Historic Royal Palaces |
Organisers say the model deliberately connects sites where tower mustard historically grew with nearby public green spaces, increasing the chance that reintroduced populations will become self-sustaining and benefit pollinators across borough boundaries.
Volunteers, partners and expert backing
At the programme’s heart were volunteers who learned delicate sowing techniques and then cared for young plants. Charlotte Harris, nature conservation manager at Habitats & Heritage, described how the scheme aimed to engage residents directly in conservation.
“[We] are passionate about engaging people in conservation initiatives. Through this tower mustard project, we have enjoyed giving local residents the unique opportunity to get hands-on in conserving one of London's rarest plants. We've found the volunteers have become really attached to [them].”
Botanist Dr Mark Spencer provided scientific guidance through the project, while the Historic Royal Palaces Gardens Team grew additional stock to be planted at Hampton Court Palace. Citizen Zoo and Habitats & Heritage have framed the work as a potential blueprint for similar volunteer-led restoration of other rare plants in the capital.
- Partners: Citizen Zoo, Habitats & Heritage, Historic Royal Palaces, local land managers and community groups.
- Volunteer input: Mighty Mustard volunteers sowed, grew and planted the seedlings after attending training.
- Conservation aim: Re-establish tower mustard populations to support pollinators and specialist moths in London.
The project arrives as London faces persistent pressure on its wild habitats from development, recreational use and invasive species. Small-scale, community-driven reintroductions such as this target ecological gaps within the urban green network and seek to reconnect populations separated by habitat loss.
For local residents, the scheme provides a practical way to support biodiversity close to home and a chance to learn hands-on conservation techniques. For conservationists, the outcome of the first year will be measured by the survival and spread of planted populations in coming seasons and whether the approach can be replicated for other rare urban plant species.
