Don't forget that long grass policy is coupled with other matters. A good bottoming out in the March to remove all the dead grass and then a good feed to encourage strong growth with a good quality sword - this creates a nice dense grass that means the birds are unsighted to the prey in the grass and go elsewhere. The grass must be regularly topped to sustain optimum length of between 150-200mm.
That is the Long grass policy being referred to.
The worms are a problem but thankfully they limit themselves to our taxiways for some reason....
