10 Ways to Use Baking Soda in the Garden


Baking Soda is a Great Garden Aid

We all know that we should keep a carton of baking soda in the fridge to take away odors. but there are so many other uses for it too, even in the garden!  Baking soda is a product often used in various “green cleaning” techniques.  It has so many uses in the house, so it makes sense that it would work outside too.

Here are 10 ways to use baking soda effectively in your garden.

10 Ways to Use Baking Soda in the Garden

  • Use it as a natural fungicide.  Just mix 4 tsp of baking soda and 1 gallon of water. Use the mixture on roses for black spot fungus and also on grapes and vines when fruit first begins to appear.
  • Garden Grime buster:  Rub baking soda on wet hands after gardening. Rinse well.
  • Use it for Powdery Mildew.  Powdery mildew can cause major problems in gardens with high humidity.   It affects many plants but zinnias, impatiens, squash and cucumbers are often badly affected.  Mix 1 tbsp of baking soda, 1 gallon of water, 1 tbsp of vegetable oil and 1 tbsp of dishwashing liquid.   Mix and put in a sprayer.  Use weekly. (try to use it when it is not too sunny)
  • Rejuvenate your rose bushes.  Mix together one tsp baking soda, 1/2 tsp of  clear ammonia and one tsp Epsom salt in a gallon of water.  One gallon will treat four buses that have lost their luster.
  • Use it as a weed killer/preventer.  Pour baking soda full strength onto cracks in a patio or walkway.  This will kill any small weeds sprouted and prevent new ones from growing.
  • Kill Cabbage worms.  Mix equal parts of baking soda and flour and dust plants such as broccoli, cabbage and kale that are attractive to cabbage worms.  The worms will eat the mixture on the leaves and die in a day or so.  Repeat the process as often as needed.
  • Sweeten your tomatoes.  Sprinkle baking soda near established plants to make your tomatoes sweeter.  (See an article on this here.)
  • Kill Crabgrass.  Wet the crab grass and pour a heavy dusting of baking soda on it.  The crab grass will die back in a few days.  (avoid surrounding grass if you can.)
  • Test your soil PH.  Wet the soil and take a small amount of baking soda and sprinkle it onto soil.  If the baking soda bubbles, your soil is acidic with a PH level under 5.
  • Discourage pests in the garden.  Sprinkle baking soda on the soil in your garden.  Rabbits, ants, silver fish and roaches do not like it and will stay away.  Kill slugs by putting it right on the pest. (don’t get it on the plants though.)

Have you found other uses of baking soda in the garden?  Please leave your tips in the comments section below.