{"slug":"tomato","family":"nightshades","scientificFamily":"Solanaceae","rotationYears":3,"followWith":["legumes","grasses","alliums"],"neverFollow":["nightshades"],"reason":"Verticillium, Fusarium, and early blight pathogens persist in soil for 3+ years. Nightshades are heavy feeders that deplete nitrogen and concentrate the same root-zone pests (root-knot nematode, Colorado potato beetle). A 3-year gap before replanting any nightshade lets pathogen populations crash.","source":"Cornell Cooperative Extension; WSU Extension; UC ANR vegetable production guides"}