It’s an old wives’ tale that planting marigolds next to your tomatoes will help protect them from insects. Despite being feet shorter and hosting big, bright blooms – features that normally attract bugs – these small plants help protect other plants and their growing fruit. But what is it about marigolds that repels what other plants attract?
While its powers are disputed by some researchers and florists, most agree that marigolds work to deter at least a portion of plant-eating crawlers. Different colors can also work to push away different bugs. For instance, almost all versions of marigolds repel cabbage worms, while the stinging rodger blend is said to keep away flies. Fragrant blends will also push away more bugs, depending on placement and how thick it’s planted. However, experts say marigolds can also attract slugs and Japanese beetles. Not to mention they take away water and nutrition that would otherwise be available for garden plants.
So should you plant them in their garden? Depending on the garden size and variety, it may not be a bad idea. Test the marigolds out and see if fewer bugs are drawn to your veggies. However, be sure to provide enough water and plant food for both your garden and the helpful flowers.
Talk to your local garden or flower shop to learn more.