Mowing in the evening time is generally accepted as the best time, as the sugar levels are at their highest. Teagasc believes that preparation is key to making good-quality silage. A sugars test should be carried out before you cut to check if the grass is fit for ensiling. Teagasc centres around the country will facilitate this; just bring in a sample of grass and they will do the rest. Once sugars are above 3%, the grass is OK for ensiling.