Top 12 troublesome weeds

Aldetha
Published on August 6th 2018
1
Creeping thistle Cirsium arvense
The four best methods of control are:
  • Removal by hand
  • Application of an organic mulch
  • Systemic or translocated weed killer
  • Selective weedkiller for lawn applications
Couch Elymus repens
The two best methods to control are:
  • Removal by hand
  • Systemic or translocated weed killer
Bindweed Calystegia sepium
The three best methods of control are: - Removal by hand - Hoeing off young plants - Systemic or translocated weed killer
Japanese knotweed Fallopia japonica syn. Polygonum cuspidatum
Knotweed is currently the most invasive plant we have in the UK and as such, is treated extremely seriously. If you think you have it, please read the following information carefully.
Japanese Knotweed: Advice from the Royal Horticultural Society (RHS)
Removal by hand can be completed but the vegetative growth cannot be removed from the site without a licence.
  • Japanese knotweed has been considered 'controlled waste' since the 1990 Environmental Protection Act, which means that it can only be disposed of at landfill sites that have been specially licensed.
  • In order to safely remove Japanese knotweed, contractors must be registered waste carriers. It's always a good idea to check this is the case before employing a contractor.
  • Japanese knotweed can also be burned on site, but it must be allowed to dry beforehand.
Oxalis corniculata, Oxalis debilis and Oxalis latifolia
They spread by tiny bulb-lets and jumping seeds. There are three main types of Oxalis that cause trouble in the garden.
The two best ways to control:
  • Removal by hand
  • Systemic or translocated weed killer
Horsetail Equisetum Arvense
Unfortunately, there's a reason this prehistoric plant has survived; Almost impossible to control by hand weeding, as the roots and stems can reproduce from the smallest particles.
Using Systemic or translocated weed killer will require several applications.
Ground Elder Aegopodium podagraria
Five best methods of control are:
  • Removal by hand
  • Mowing regularly
  • Hoeing when young
  • Systemic/translocated weed killer
  • Residual weedkiller
Enchanter's Nightshade Circaea lutetiana
Three best control methods:
  • Removal by hand
  • Systemic or translocated weed killer
  • Application of an organic mulch
Creeping buttercup Ranunculus repens
Seven best methods to control:
  • Removal by hand
  • Mowing regularly
  • Hoeing when young
  • Systemic or translocated weed killer
  • Residual weedkiller
  • Covering with a landscape membrane
  • Selective weed control
Nettles Urtica dioica
Four best methods to control:
  • Removal by hand
  • Mowing regularly
  • Hoeing when young
  • Systemic or translocated weed killer
Himalayan balsam Impatiens glandulifera
A single Himalayan balsam can produce hundreds of seeds, which are shot several metres through the air when the seedpods ripen.
Best control method:
There are Himalayan balsam bashing parties that happen across the country.
Hemlock Conium maculatum
Three best methods to control:
  • Use a biological control. There's only one known biological agent (the hemlock moth) that will actually do the job, and it's unfortunately pretty pricey. But if you've got the money, the hemlock moth larvae will devour the leaves, leaving the plant bare and defoliated.
  • Removal by hand wearing the correct personal protective equipment
  • Systemic or translocated weed killer
Share your weeding hints and tips with us!
Free download for your phone or tablet
Download on the App StoreGet it on Google Play

Lots to see

Making plans to stay local or explore a new area? Use the Places map to explore and find out more details of gardens around your current location. To find gardens and garden centres near you download our free app.
Download on the App StoreGet it on Google Play