Instead of spending your hard-earned money on new dahlias, cannas, or other tender bulbs every year, why not simply keep the ones you already have? As soon as their leaves start to turn color in the fall, dig ‘em up and wash them in this tonic before storing them away in a frost-free place for the winter.
Here are the easy bulb-cleaning instructions: Mix 2 tablespoons of baby shampoo, 1 teaspoon of hydrogen peroxide, and 1 quart of warm water in a bucket, then gently drop in your bulbs. Let them soak for a minute or so, remove them, and set them on a wire rack to drain. Be sure to let them dry thoroughly before you put them away; otherwise, they’ll rot.