Yes, it can since you have a perfect example, and that's the WORX WG157E.9 Cordless Grass Trimmer. As you will find, cutting the grass with the lawnmower is a more accessible way to do so since it will need a smaller amount of time and offer better performance. However, when you cannot afford the lawnmower, you can use an electric strimmer, and, of course, you can use it for longer grass as well. It will show the same performance as with the smaller grass.