I am just the average person fighting the everyday endless battle against crab grass. I am here offering some tips and advice to be rid of the unwanted nuisance.
The easiest and cheapest way to be rid of crabgrass when lawn is infested throughout:
First off, you should mow your lawn at a 1 ½ inch setting and once that is complete make sure to mark all the sparkler heads so you don’t hit them during the second mow . After your done dispose of all the grass clippings and set your lawnmower to the lowest setting and mow it once again. Then wait a couple weeks without watering the grass to let the crab grass die out making it easier for removal. Once the grass looks dead rake up the remaining crab grass and weeds and prepare the lawn for the rototiller. Then rototill the entire lawn and rake up all the roots of any excess grass that was left from previous treatments you should find some friends or family to help you out during this process to make life easier. After this wait a few more weeks without watering just to make sure there is no new growth of weeds or crabgrass and if there is pull it out by hand or dig out with shovel depending on how deep the roots go. Once there is no new growth decide whether you would like to spread grass seed or buy sod to start over fresh. If you buy the grass seed make sure to spread the grass and then spread compost over it to keep moisture in and avoid animals from it eating. Within a few weeks you should see the grass begin to grow and couple months your lawn will be full of beautiful grass. If the grass looks thin spread more grass seed to get a fuller look. If you choose to use sod then your project will be complete once it is laid.
Tips for when crabgrass appears in small isolated patches:
Find a good crab grass killer and a sprayer at your local hardware or home improvement store. I am a big fan of Bayer Advanced All-in- one lawn Treatment but you can check out what best fits your needs with your lawn. Once you have cut your lawn and discarded of all the clippings follow the instructions on the label that indicates how much of the solution should be used per gallon of for the treatment. Once you create the concentrate spray the entire lawn go heavy on problem areas. After a couple treatments you should begin to see the crab grass turn yellow and dry beginning to die from this treatment. When you see that this has taking place be sure to dig the crab grass out from the root to prevent future infestation. Once i you have dug up your problem areas you can been the process of replanting new grass. In these areas use the straight-edge of your shovel to scrape up the soil using a power rake to cut grooves into the soil. Then spread 3/4 of an inch of compost with seed and apply a starter fertilizer. Gently work the grass seed into the compost within two weeks you will see re-growth of the grass without the crabgrass. Water your lawn regularly and next spring be sure to apply pre-emergent grass control to make sure to keep your unwanted guest away.
This may cost you time, energy and money but your end results will be worth your while and just as with an pest you deal with you may have to fight more than one battle to win the war. Good luck!!