11 plants you should never plant near cucumbers for healthy growth and yield

For a bountiful cucumber harvest, avoid planting them near potatoes, melons, or fennel, as they compete for resources or release harmful chemicals. Aromatic herbs may affect flavor, while squash shares pests. Black walnut trees produce a toxic substance, and mint aggressively steals nutrients. Brassicas, tomatoes, eucalyptus, and Jerusalem artichokes also hinder cucumber growth.