The Brown Lawn Society
Organization encouraging environmentally friendly methods for lawn care such as the reuse of rainwater and natural pest collectors.

Lesbian Gardens
Special thoughts on growing plants, various links and member information.

The Professional Gardeners Guild
An organisation for gardeners employed in private gardens and estates. Based in the UK with members in European countries and the United States.

The Gardeners Club
A directory of all local and national gardening related clubs, societies and organisations in the UK.

Canadian Botanical Conservation Network
A registered charitable organization which helps conserve biological diversity through networking tools and conservation programs for botanical gardens and arboreta.