Cut the couch grass to
about 2cm (1in) high with a strimmer. Alternatives are to burn it
off with a flame thrower or cut it down with a scythe.
Rake up the cut grass,
don't use it on the compost heap unless you plan not to use the
heap fro 9 months.
Rotovate then dig the
soil or simply dig the soil. Use a fork not a spade to dig, this will
keep the non-rotovated lower roots of the couch grass uncut and
easier to remove in long strips.
Whilst digging, remove
as many of the couch grass roots as possible. A sieve will make a
thorough job and give you the crumbliest soil ever.
Dig a trench at least
15cm (6in) deep around the cultivated bed. This will stop the
couch grass re-infesting the cleared area.
Over the next few
months, weed out any couch grass which reappears from roots left
in the ground. This is an easier task than most think because
digging the soil will have opened the structure of the soil. We reckon
about half an hour a week for the next 4 months will be enough to
remove the remaining couch grass on a half allotment.
Once step 5 has been
completed, any soil which is not to be used immediately can be
covered in mulch (black plastic, carpet etc). This will clear any
remaining couch grass in six months and will seriously weaken the
grass after only one month.