Gardeners with shorter seasons can attain similar results by planting marigolds where nematodes are a problem, then planting melons in the marigold plot the following year. (The recommended mowing and tilling methods are the same regardless of climate.) As with other pest management strategies, it is a bad idea to rely exclusively on marigolds for nematode control each year, says Dr. Ploeg. Alternating marigolds with other control methods (like solarization or rotation) is essential.
Plants That Grow Better Side-By-Side