Managing wildlife

Since 1913 UK gardeners have welcomed a wealth of "alien" plant species from overseas to decorate their green spaces. Many are harmless but when some, such as the highly invasive Japanese knotweed, break out into the wider countryside they can have serious implications for our native environment.

The British Ecological Society (BES) is celebrating its centenary with an exhibit: "Have aliens landed in your garden?" at the RHS Chelsea Flower Show. Dr Ken Thompson reveals our changing tastes for exotic plants over the last 100 years and highlights some new and unexpected animal arrivals.

To see the enhanced content on this page, you need to have JavaScript enabled and Adobe Flash installed.

Slideshow production by Michelle Warwicker. Photos by Photoshot, Julie Hodgkinson and Michelle Warwicker. Music by Universal Music Publishing. Publication date 24 May 2013.

More on This Story

Summer of Wildlife homepage

Related Stories

The BBC is not responsible for the content of external Internet sites

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.