Potatoes (Solanum tuberosum)

NightshadesRootsVegetables

Potatoes thrive in companion planting when paired with beneficial plants that enhance growth, deter pests, and improve soil conditions. Good companions include beans and peas, which fix nitrogen in the soil, and herbs like basil and thyme that repel insects. Marigolds and nasturtiums help deter potato beetles, while onions and garlic protect against aphids. Horseradish is particularly effective in repelling pests and improving potato plant health.

However, some plants should be avoided near potatoes. Tomatoes, peppers, and eggplants belong to the same nightshade family and can spread diseases like blight. Carrots and turnips compete for nutrients and space, while sunflowers can inhibit potato growth through allelopathy. Proper companion planting helps potatoes grow stronger, resist pests, and produce higher yields.