titanandrews said:

The grass that I overseeded 31/2 weeks ago is now about 3" high in
most places. It looks very fragile though. I guess this is normal for
new grass? I was just wondering if mowing with a riding lawnmower will
damage the new grass. I really need to mow, because the weeds and other
grass are getting a little out of hand.

Mow tall, and (most importantly!) before you hit the lawn,
*sharpen the mower blade*.

Dull blades can shred the grass rather than cut it. Not good.
--
Pat in Plymouth MI ('someplace.net' is comcast)

Any technology distinguishable from magic is insufficiently advanced.
(attributed to Don Marti)