As the warm weather approaches, gardeners across the country are starting to plan their flower beds and vegetable patches in anticipation of the garden-planting season. Whether you’re a seasoned gardener, or if this is the first year you’ve decided to get outside and get your hands dirty, you’ll want to make sure that you’re doing everything you can to ensure your garden’s success.

Many gardeners will use the principles of companion planting to make sure they’re putting plants together that will help each other to thrive. It is equally as important, however, that you consider which plants should not be planted together, or else your garden could fail.

Consider the following rules of “non-companion” plants, as well as plants that don’t grow well together, before you take your trowel to the soil.

Onions + Peas

You should never plant members of the onion family, including shallots and garlic together with peas. It is believed that thee onions can stunt peas’ (and beans’) growth.

Potatoes + Tomatoes

Growing tomatoes and potatoes together means trouble. They’re attacked by the same blights, so when next to each other, the diseases spread more easily.

Peppers + Beans

Peppers and beans are both susceptible to anthracnose, so if one gets it, they’ll both be infected if you plant them side-by-side. Their fruits will be ruined with dark and soft spots on them.

Carrots + Dill

Dill and carrots are traditionally cast as enemies, though no scientific research yet supports this observation by gardeners.

Cabbage + Grapes

Sowing cabbage seeds near grape vines spells trouble for your homemade wine.Gardeners have noticed this adverse effect some 2,000 years ago. Can you believe it?

Black Walnuts + Tomatoes

Black walnut trees are known for being bad neighbors. In fact, the trees’ roots emit a chemical called juglone, which appears to be toxic to many deep-rooted plants that grow nearby, such as tomatoes.

Lettuce + Broccoli

Lettuce is sensitive to chemicals found in residues left behind by broccoli plants. There is a possibility that if you sow lettuce near broccoli,  may hinder seed germination and growth.

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