I've been letting my grass grow unmowed for the last three weeks and I'm actually enjoying the thick, green, untamed, healthy look. I haven't watered outside of the generous rain that's been falling (twice the normal annual average), and the lawn is largely more shaded than sunlit, though every part gets at least a little sun in the day. The grass is a mix of Scotts tall, fine and red fescue, bluegrass and ryegrass. I fertilized once in the early spring along with the seasonal overseeding and sprayed one application of Ortho Weed-B-Gon three weeks ago to fight the weeds leaking in from my neighbors' unkempt, patchy low-mowed lawns on either side. I generally mow with a manual Craftsman push mower at about 2.5 to 3 inches height, except for the last three weeks. The grass stalks are starting to grow seeds at the top now.
Is there a reason, other than cosmetic, for me to go back to mowing the lawn?