I need to get rid of crab grass that loves it here.

Do you follow a fertilizer five step program?

Interesting, I have never heard that. There are a number of ways to kill crabgrass. I use boiling water and vinegar. I prefer not to use chemicals. Pets and visiting children. There are class action lawsuits for some of the common weed killing remedies as they may cause cancer. Here are a few links!

https://www.thespruce.com/how-to-kill-crabgrass-2132940

https://www.rodalesorganiclife.com/garden/no-more-crabgrass

https://www.lawn-care-academy.com/killing-crabgrass.html

Just watch the vinegar, it will kill anything it touches, above, or in the soil, including grass and plants. Avoid getting it on anything you want to keep.

http://homeguides.sfgate.com/homemade-crabgrass-remedies-87923.html

If you can still see the crabgrass plants, you can dig them out with a trowel. Put the plants in a plastic bag as soon as you dig them out. You don’t want seed, pollen, or roots dropping back into the soil. 😇