The RHS believes that avoiding pests, diseases and weeds by good practice in cultivation methods, cultivar selection, garden hygiene and encouraging or introducing natural enemies, should be the first line of control. If chemical controls are used, they should be used only in a minimal and highly targeted manner.
- Hand-pulling or hoeing of weed seedlings is the easiest way to control this weed, but is time consuming and needs doing promptly - before plants flower and set seed - to be effective. Use gloves if grasping stems directly. As seeds can lie dormant in the soil for long periods of time, this task will be on-going.
- To help reduce the number of seeds introduced to the garden, brush down clothing and pet fur following walks on arable or uncultivated land where the weed is most commonly found. It is also important to avoid adding any mature weeds, which have set seed, to a home compost bin.
- To prevent germination of weed seedlings, apply an opaque mulching film or layer of bulky organic mulch, such as woodchips, to the soil at a depth of at least 8cm (3in).
In beds and borders
Non-selective contact herbicides containing acetic acid (Weedol Gun! Fast Acting, Roundup Speed Ultra, Ecofective Spot On Fast Acting Weedkiller), fatty acids (SBM Solabiol Super Fast Weedkiller) or pelargonic acid (Doff 24/7 Fast Acting Weedkiller, Neudorff Weedfree Plus, Resolva Xpress Weedkiller, Roundup NL Weed Control) can be used in such situations to scorch off foliage. Take care if applying such herbicides between ornamental plants by covering them with plastic sheeting whilst spraying. The covers can be removed once the spray has dried onto the weed foliage.
The systemic non-selective herbicide glyphosate can be used in the same way, but it is particularly important to avoid spray or spray drift coming into contact with garden plants. If treating weeds in the immediate vicinity of garden plants, apply carefully using a ready-to-use spray in cool, calm weather. Protect branches and shoots by tying them aside, or by using covers or screens. Make sure weed foliage has dried before releasing branches or removing coverings.
Around established trees and shrubs
SBM Job done Tough Weedkiller (ready-to-use only), SBM Job done Path Weedkiller (ready-to-use only) and Weedol Pathclear products containing glyphosate/diflufenican and can be applied once a season to natural surfaces where no plants are to be grown, and can also be applied under and around established woody trees and shrubs. This product kills off existing small green growth and prevents or checks developing growth. Check manufacturer’s recommendations before use to avoid damaging sensitive plants.
Inclusion of a weedkiller product does not indicate a recommendation or endorsement by the RHS. It is a list of products currently available to the home gardener.
Weedkillers for gardeners (Adobe Acrobat pdf document outlining weedkillers available to gardeners; see sections 3 and 5).
Chemicals: using spot and broad-scale weedkillers
Chemicals: using a sprayer
Chemicals: using safely and effectively
Weeds: non-chemical control