There are over 2 million domestic gardens (or 359,000 acres) in this country. Just imagine the difference it could make if 2 million gardens became biodiversity friendly! But we wouldn’t just be opening our gardens to nature for altruistic reasons. Gardening for Biodiversity also has advantages for human health and wellbeing. Research has shown that the more urbanised humans have become, the more we actually need exposure to nature. It’s good for your brain! A sterile garden, with tightly mown grass, or hard/artificial surfaces, offers humans no exposure to nature, no buzz from busy insects, no birdsong, no life.