I was told my lawn needs limestone and potassium what do you recommend and when do I put it down.
You can put limestone down at any time but you’ll need to do a pH test to see how much you need HERE’S A LINK on how to do a simple pH test. Pelletized lime is the best.
Potassium is the third of the three numbers in the guaranteed analysis on all packages of lawn food. Any decent lawn food will provide potassium. September is a great time to feed the lawn before winter.