Baking soda neutralizes the ph in the soil and nothing will grow there. use baking soda around all of the edges of flower beds to keep the grass and weeds from growing into beds. Just sprinkle it onto the soil so that it covers it lightly. Do this twice a year - spring and fall.
Most vinegar is only 5% acidity so you have to repeat a few times. However you can use pickling vinegar at 7 to 10% (or boil regular vinegar to concentrate it) and add a bit of dish soap to it, it will control weeds all summer
Here are 7 ways to murder weeds with household items. You’ll save money and show no mercy to your garden’s uninvited guests. Read more: http://www.houselogic.com/home-advice/landscaping-gardening/how-to-get-rid-of-weeds-naturally/#ixzz1r4k7iloN
A Pinner says: this is the BEST Weed Spray. I made 3 gallons for around $4.00 last year after seeing a pin. Worked better than Round Up & killed the weeds/stray grass on first application. One gallon of APPLE CIDER VINEGAR, 1/2 c table salt, 1 tsp Dawn. Mix and pour into a smaller spray bottle. - Click image to find more Other Pinterest pins