The Alien Invasion Myth…and other stupid comments
Wednesday, December 21st, 2011
Apparently the whole Japanese Knotweed eradication industry is a ‘myth’ …or so some dusty old boffin writing for the Horticultural Society would have us believe.
Alien plants are supposedly not a threat to biodiversity and the truth is that ‘nobody knows’ the real extent of the problem.
He states that alien species are ‘rare’ and that they occur ‘overwhelmingly in and around towns and transport networks’ and are ‘generally uncommon in semi natural habitats that we most want to preserve’.
He notes that Himalayan balsam only displaces ‘other aliens’ or ‘thuggish natives’ – he then further notes that Japanese Knotweed harbours ‘late pollen for bees’
Frankly I don’t know where to start, articles like this make my blood boil.
I could take the author to a multitude of sites around my office without travelling more than 10 miles and show sites that are completely over run with either Japanese Knotweed or Himalayan balsam. These sites would vary from industrial to domestic through to open countryside and SSSI’s.
I am a keen mountain biker and travel all over the country to some of the most remote regions – and I can confirm – I always spot non-native invasive plants….everywhere!
Anybody saying this isn’t an issue is either blind or stupid.
Anybody in a position of credibility saying this isn’t a problem – needs shooting.
Myth : they cost £1.8 billion a year to control
The cost implications of Japanese Knotweed have been detailed in a report titled The Economic Cost of Invasive Species on Great Britain. These are not ‘extrapolations of extrapolations’ – these are figures based on detailed analysis of turnover from the major contractors working in the field of Invasive Species management.
This isn’t a myth - its fact.
Myth : Gardeners are responsible
Much has been made of where these plants originated from and unfortunately (sorry Mr Pearman) they originated from private gardens.
It has been proven time and again that gardeners share their prize plants and offer cuttings and seeds with colleagues and friends - and this is how many of our problem plants were spread around the country.
It is only recently through initiatives such as ‘Be Plant Wise’ that the British Public are being made aware of the problems that Invasive Non Natives can cause.
This isn’t a myth – it’s a fact
Mind you, I suppose if Japanese Knotweed provides ‘late pollen for bees’ – then it must be ok?
Mike C


