Vinegar emerges as the clear winner for natural weed control, outperforming baking soda in direct comparisons. When applied as a simple solution of white vinegar and dish soap under full sunlight, this acidic mixture dehydrates weeds within 24-48 hours without chemicals. The optimal recipe combines:
1 cup white vinegar (5% acidity)
1 tbsp dish soap
– Spray directly on leaves during hottest part of day
– Avoid treated areas for 24 hours after application
– Reapply weekly for persistent weeds
Baking soda shows limited effectiveness, only working temporarily on small weeds in pavement cracks when used undiluted. Mixing vinegar and baking soda neutralizes their weed-killing properties, making this combination counterproductive despite social media claims. For eco-conscious gardeners, vinegar-based solutions provide reliable results while maintaining soil health when used as directed.