Identify your weeds. Annual weeds, such as chickweed, just need hoeing
and they die, perennials such as docks, dandelions and bindweed will keep
growing back unless you fork out the roots.
Areas of problem weeds can be mulched. The lack of light weakens weeds
and they either die or can be dug out easily. Suitable mulches include
woodchips, black plastic, shredded prunings and straw.
Regular hoeing really helps to keep on top of weeds.
Compost your weeds to feed the soil. A working compost bin will break
down most weeds but you may prefer to dispose of the roots of perennial
weeds in the skips provided on your site.
Weed-killers aren't an answer to all weed problems. Glyphosate (sold as
Roundup or Tumbleweed) is taken down into the roots and kills them but it
only works in spring or summer when the weeds are growing strongly.
The tough shoots of mare's tail are resistant to most weed-killers. The
roots can't be dug out fully as they grow deep into the soil. Mulch to
weaken the plants, dig out as much as you can and then keep hoeing.