The biggest problem with long wet grass in the early part of the year is that it is so rich and lush which leads to ‘scoots’ as rosemary puts it. After its been cut you get another flush of growth but its not quite so rich which is why this is so good for sheep and cattle finishing. However as the season gets later the grass loses vitality and isn’t quite so nutritious so less of a problem with scoots, scald will be a problem tho’.
Last year we finished some feeding ewes on just such grass. Ewes will cope with it better than lambs.
In a way long grass in winter can be beneficial as the dying tops provide shelter for newer growth underneath which sheep can scratch out over winter.
In the spring if the grass has turned coarse it should be topped and harrowed as soon as the ground is firm enough to allow a tractor on