Baking Soda- neutralizes the ph in the soil and nothing will grow there. 0 use baking soda in a 6" wide area 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, twice a year - spring and fall.
Spring is coming and 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. (you can purchase 3 gallon size Apple Cider Vinegar in the canning section of a good hardware store - cheap!)
A Guide to using Epsom Salt in the Garden | thegardengeeks • Epsom salt is made up of magnesium sulfate. Magnesium is critical in the formation of chlorophyll and in aiding the absorption of phosphorus. Epsom salt as a plant food provides a greener appearance in acid loving plants such as tomatoes, outdoor lawns, rhododendrons, camellias, roses, and azaleas.