By Zenny
Rue — This herb emits chemicals that can stunt basil’s growth and reduce its flavor.
Fennel — Fennel is allelopathic, meaning it releases substances that inhibit the growth of nearby plants like basil.
Cabbage — Planting cabbage near basil can attract pests that might also damage your basil plants.
Tomatoes — Although often grown together, some gardeners find that tomatoes can overshadow basil and compete for nutrients.
Sage — Sage and basil have different water and soil needs, so planting them close can stress basil.
Cucumbers — Cucumbers grow fast and can shade out basil, limiting its access to sunlight.
Peppers — Peppers can attract pests and diseases that may also affect basil, making them poor neighbors.
Basil thrives best with companion plants like tomatoes, peppers (with caution), and oregano, but it’s important to keep these incompatible plants at a distance to ensure your basil flourishes.