This is cool stuff. NW Iowa farm -- we sometimes found limestone rocks with fossil imprints from sea creatures. Iowa was actually under water millions of years ago.
TCW -- When I worked for ChemLawn in San Antonio, we had what you're saying. "Caliche" soil and limestone within an inch of so below the surface.
I never mow my lawn (ZTR) when the soil is moist/wet. I will wait -- even if I have to double cut it. Maybe it's the 'farmer' in me. I figure you guys are the same way. (thanks)
Proud subscriber of TURF Magazine. (thanks Ron)