Potatoes and Tomatoes: Both potatoes and tomatoes are susceptible to similar diseases, such as late blight and early blight.
Beans and Onions: Beans are nitrogen-fixing plants, which means they add nitrogen to the soil. Onions, on the other hand, prefer soil with lower nitrogen levels.
Cucumbers and Potatoes: Cucumbers are susceptible to a disease called cucumber beetle, which can also affect potatoes.
Brassicas: Brassicas are heavy feeders and may deplete the soil of nutrients needed by strawberries. Additionally, brassicas are susceptible to similar pests and diseases.
Corn and Tomatoes: Both corn and tomatoes are heavy feeders and may compete for nutrients in the soil.
Peppers and Beans: Peppers prefer well-drained soil, while beans prefer soil with higher moisture levels. Planting them together may result in inconsistent soil conditions.
Squash and Potatoes: Squash plants can spread and may shade out potato plants, reducing their yield. Additionally, squash plants are susceptible to powdery mildew.
Lettuce and Brassicas: Lettuce is a shallow-rooted crop, while brassicas have deep roots and may compete for water and nutrients in the soil. Planting them together.
Onions and Peas: Onions release sulfur compounds into the soil, which may inhibit the growth of peas. Additionally, onions may attract onion flies, which can also affect peas.