Baking soda kills weeds by drawing water from the plant cells, forcing the foliage to dry off. The sodium bicarbonate is phytotoxic to plants and can control any type of weeds in lawns and gardens. To kill weeds using baking soda, mix it with water and a surfactant and spray it on weeds until they die off.

Yes, baking soda kills the weeds if appropriately applied all over the plant including foliages, and stems. Baking Soda is an organic, natural, post-emergent weed killer and an excellent solution for solving gardening problems including weeds, fungus, killing moss, and compost odor.

Baking soda, or sodium bicarbonate, acts as a natural herbicide that increases the salinity of the soil, which in turn inhibits the growth of most weeds. When applied directly to the leaves and roots of weeds, it dehydrates them and disrupts their internal water balance, leading to their eventual death.