Too many weeds growing on your lawn? Here's what you need to know about when to apply weed killer to the lawn, alternatives to using a herbicide, and how to keep your lawn healthy and weed-free.

Q: All my darling mini mondo grass plots are littered with small clumps of grassy-looking plants with glossy leaves and sharp points. How can I get rid of them? Nancy Shevitz, email A: The glossy ...