by Vicki Gagne
Question: I've heard people talk about using Roundup to get rid of invasive alien plants, but I’m worried about using an herbicide. Can you tell me about it?
Answer: Roundup is a nonselective herbicide that works by direct contact with target plants. It spreads from the leaves into the roots. In order for this to happen, the plants must be actively growing. That is why Monsanto (the makers of Roundup) recommends using the product on warm, sunny days, when the temperature is at least 60 degrees.
Monsanto states that, when used as directed, Roundup is inactive in the soil. When this product comes into contact with the soil, it binds to soil particles, preventing leaching into ground water.
Caution must be exercised when using this product and all other herbicides. They are considered "safe" only when used according to directions. Therefore, it is imperative to read and follow all directions. Wear protective clothing, goggles, and a mask.
You are right to worry about using herbicides. I recommend using this method of weed control only if there is no other feasible option.