There are also home remedies for killing weeds. Type in "home remedies weed killer" on the internet and you will find some. Typically the home remedies contain a bit of dishwasher (hand) soap, etc. Also, you can put down black plastic (either trash bags or buy rolls of black plastic) or they make a weed "netting" that you lay down... or add mulch to the "rows" or extra spaces away from the plants to try and control them before they grow.
Any weed killer or weed and grass killer that is marked on the label should do the job. They would be available at any big box store. If the garden is not too big a few spray bottles should do the job. Just be careful you don't spray the veggies and flowers. It would kill them as well. If garden is small pulling them by hand would be best.
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