Property body tackles knotweed

Guide on managing Japanese knotweed issued by Property Care Association to set standards.

A national property trade association has published a standardised policy to control Japanese knotweed.

The Property Care Association (PCA), which represents specialists who resolve structural issues, outlines a thorough guide to management of the herbaceous perennial, which can grow up to 1m a month and push through concrete, preventing mortgage approvals.

PCA chief executive officer Steve Hodgson said: "Japanese knotweed has been the subject of controversy in the UK property sector. This new code sets a robust measure of competence and will help address associated issues."

Ground Control national group training manager and BALI technical director Neil Huck added: "It's good that property people are taking notice of it. There need to be standards. We're trying to develop a system of people who are qualified to tackle it - there are a lot of cowboys out there making exorbitant claims they can't back up."

He said the weed's spread is often worsened by lack of knowledge among builders. "It is better if we are brought in as early as possible before development. It is worth a lot of money and we have a range of solutions. But we see it as part of the package for our clients." These include Tesco, Sainsbury's and Thames Water.

Dow AgroSciences has launched ICADE, which is a new herbicide containing triclopyr and aminopyralid. The product is odourless, has a low active ingredient salt formulation and no volatility issues. ICADE can also be used from March through to October.

Japanese knotweed Suggested solutions

Ground Control's methods:

Early Excavate deep and bury 6m down in a plastic membrane.

Late Excavate deep and then dump on a landfill site for contaminated soil.

Near water Individually inject weeds to preserve water quality.

CABI's jumping plant lice:

Not-for-profit organisation CABI worked with Defra and the Welsh Government to release the plant lice psyllid Aphalara itadori into Britain. The 2mm insects only eat Japanese knotweed and have so far survived here.


Before commenting please read our rules for commenting on articles.

If you see a comment you find offensive, you can flag it as inappropriate. In the top right-hand corner of an individual comment, you will see 'flag as inappropriate'. Clicking this prompts us to review the comment. For further information see our rules for commenting on articles.

comments powered by Disqus

Read These Next

Sargent's solutions - facilitating staff training

Sargent's solutions - facilitating staff training

Training for gardens staff can be arranged through colleges or by bringing in skilled artisans on-site, Alan Sargent explains.

Tractor-mounted mowers

Tractor-mounted mowers

Versatile and durable roller mowers continue to grow more popular and are proving their worth across a variety of sites and applications, Sally Drury finds.

Castanea

Castanea

Serrated leaves, twisted bark and tasty nuts make the sweet chestnut a highly prized tree, writes Miranda Kimberley.


 
Horticulture Jobs
More Horticulture Jobs

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.

Landscape Contracts & Tenders

Industry Data

New: We have pooled the wealth of data from the past six months' worth of Landscape Project Leads to create an exclusive report for subscribers looking at the key development trends, clients and locations for 2016.

What Kit

Find and compare landscape & amenity equipment.