Japanese Knotweed Solutions founder Mike Clough challenges government proposal for eradicating the weed

Japanese Knotweed Solutions founder Mike Clough has questioned whether the UK Government is fully prepared to introduce the sap-sucking non-native aphid Aphalara itadori to tackle the problem of Japanese knotweed.

The non-native species policy review working group estimated that to control the invasive alien plant, the Government needs to spend more than £2.6bn. Clough said although the introduction of the aphid would "appear [to be] a cheap and effective solution to halt the growth of the plant" and is not likely to cause the same environmental damage as the cane toad that was introduced to Australia, "careful consideration needs to be made".

He cited the Government's own Pest Risk Assessment: "It is not certain that Aphalara itadori could be contained or eradicated once it has spread beyond the limited release area."

Some 87 species from the UK's total biodiversity range have been tested by CABI against the aphid but Clough said: "There are no guarantees that the aphid won't cross-breed or even become attracted to other plants as its natural home declines."

He added: "Having to wait for an aphid to eat the foliage simply would not provide the solutions needed for the beleaguered construction industry and, most importantly, Aphalara itadori does not actually kill knotweed but simply helps manage its growth — thus it is not tackling the problem."

He said current herbicide and excavation eradication methods remain expensive, while including knotweed in the Weeds Act would be unpopular with the Environment Agency, Network Rail, the Highways Agency and local authorities.

Clough said the Government should legislate against the spread of Japanese knotweed and support landowners with the problem. He called for a co-operative approach between the public and private sectors to use all available resources to stem the spread of the weed.


Have you registered with us yet?

Register now to enjoy more articles and free email bulletins

Sign up now
Already registered?
Sign in

Read These Next

Sargent's solutions - how to turn the loss of a key member of staff into a positive

Sargent's solutions - how to turn the loss of a key member of staff into a positive

Losing a valued member of staff can be a positive opportunity for change rather than a disaster, Alan Sargent suggests.

Tractors: market roundup

Tractors: market roundup

Manufacturers are working to provide solutions to many challenges. Sally Drury looks at their newest models.

Tractors reviewed: flexible choice

Tractors reviewed: flexible choice

These two tractors are designed for versatility and operator comfort, but how do they fare under tough test conditions? Sally Drury reports.


Horticulture Jobs
More Horticulture Jobs

BUSINESS LEADs

Build your business with the latest public sector tenders covering landscape, arboriculture, grounds care, production and kit supplies. To receive the latest tenders weekly to your inbox sign up for our Tenders Tracker bulletin here.

Are you a landscape supplier?

Horticulture Week Landscape Project Leads

If so, you should be receiving our new service for Horticulture Week subscribers delivering landscape project leads from live, approved, planning applications across the UK.

Horticulture Week Top 50 Landscape and maintenance contractors

See our exclusive RANKING of landscape and maintenance contractors by annual turnover plus the FULL REPORT AND ANALYSIS

PLANT SUPPLIERS GUIDE

Free to subscribers, the essential guide for professional plant buyers
 

Download your copy

Products & Kit Resources