I sowed marigolds between my tomato plants just for a bit of colour: when I pulled them out in October, I understood what had been working under the soil
A gardener planted marigolds for color between tomatoes, only to unearth a remarkable discovery: pristine roots free from the galls that plagued previous harvests. The secret lies in compounds marigolds release underground that suppress destructive nematodes—but only if you plant them right.