Weed or problem grass identification -
You could try downloading this free app - Seek by iNaturalist
Your local county extension service, which is a part of your state university, will have an extension office in your county or municipality and all of them have open hours for homeowners to get help like the ID of problem weeds and grasses. These are great resources for you because these folks have regional knowledge of what’s going on with other lawns too and can steer you quickly to an answer.
You can find your state's County Extension Office by choosing your state when you visit the link below:
Keywords: grass, weeds, weed, identification, identify