Gardens tend to have weeds and it is unavoidable and sometimes they go to the seed. Adding chemicals to your garden to kill weeds might not be the best idea for the soil. Some ways to remove weeds are hand picking them or using a good garden hoe. Leaving chickens in the garden is also a great idea for scraping and weeding. Tilling is another great way to remove weeds from gardens.
https://www.livspace.com/in/magazine/homekeeping-garden-cleaning