Question: I’ve heard that turning soil in your garden at night might be a way to control weeds. Is this true?
Answer: Research indicates that weeds may be stimulated to grow by a sudden flash of light, which is what you give them when you turn the soil over during the day. A German study concluded that by turning the soil at night, weed germination could be reduced by as much as 78 percent. You can try this method by working during a moonlit night, or at dawn or dusk.