Knowing what not to plant with tomatoes can prevent pests and stunted plants.

Choosing the righttomato companion plantscan help you grow healthier tomatoes and naturally repel pests like hornworms.

Knowing what not to plant with tomatoes can be just as important for a good harvest and healthier garden.

potato plant leaves

Credit:Scott Little

Grow these plants as far apart as possible and alwayssterilize gardening toolsin between plants to limit disease spread.

Eggplants also love lots of sun and dont do well in the shade of taller tomatoes.

Rosemary

Rosemaryand tomatoes have different care requirements, and growing them together creates unnecessary work for gardeners.

close up of a corn stalk

Credit:Bob Stefko

If you want to grow tomatoes with herb plants, youll have better luck withbasil.

Cucumbers

Tomatoes andcucumberscan sometimes grow well together, but their relationship is tricky.

Not only are they susceptible to some of the same diseases, but these plants are both heavy feeders.

eggplant growing on vine

Credit:Carson Downing

Plus, vining cucumbers may cast too much shade on tomatoes and stunt their growth.

Its best to plant fennel alone in pots or a dedicated raised bed.

Walnuts

Peter Krumhardt

Walnutsare another allelopathic plant that suppresses the growth of nearby crops.

ground cherries

Credit:Jay Wilde

broccoli plant in vegetable garden

Credit: Marty Baldwin

creeping rosemary

Credit:Jay Wilde

‘Marketer’ cucumber

Credit: Jay Wilde

fennel plant Foeniculum vulgare

Credit:Denny Schrock

sweet potato plant in garden

Credit:Dean Schoeppner

Black Walnuts In Tree

Credit:Peter Krumhardt