Thanks to Jenny Steel of Wildlife Gardening for information.

Jenny Steel has a degree in Applied Biology and a master's degree in Plant Ecology from Oxford University. She is the author of seventeen books on wildlife gardening and wildflower gardening. She lives in South Shropshire where she has a two acre wildlife garden. She is a freelance writer for organisations, magazines and Wildlife Trusts. Her wildlife gardening information website can be found at www.wildlife-gardening.co.uk.