Signals AZ

Top 10 Tomato Companions in this Year’s Garden

Article audio is made possible by CAST11 Prescott Podcast Network. A Talking Glass Media production.

This week, Ken Lain The Mountain Gardener of Watters Garden Center in Prescott teaches us about 10 tomato companions in this year’s garden. Learn what to plant to keep bugs away from tomato plants, which plants tomatoes like to be planted next to, what marigolds to plant with tomatoes, if tomatoes need companion plants, which companion herbs are good for tomatoes, what grows well with tomatoes and peppers, and more!

watters podcast, watters garden center, ken lain, the mountain gardener, lisa watters-lain, arizona's garden gal, tomatoes, tomato companions signals az

Native American Three Sisters Gardeners are legendary. Planting corn, beans, and squash together helps all three plants thrive and produce a better harvest. These first gardeners of the soil were the first to use companion plants to improve vitality. Companion planting the vegetable garden involves part folklore, wishful thinking, and experience. Let’s take the mystery out of companion plants for tomatoes that work.

Luckily tomatoes make good companions with the majority of popular garden vegetables. Some companions help improve the health and vigor of tomato plants, and some improve tomato flavor. Other companions are used to repelling and deter insect pests and diseases. You’re probably going to grow some of these plants anyway, so why not experiment and use them as companion plants with tomatoes?

Many plants are touted as improving tomatoes’ health, vigor, and flavor. These features are hard to measure, more scientific research must be done to back up the claims, and many other factors may be involved. Still, it’s interesting to try them in your own garden.

For Bigger Better Tomatoes

Here are the Top 10 plants that will help your tomatoes grow larger and taste better.

watters podcast, watters garden center, ken lain, the mountain gardener, lisa watters-lain, arizona's garden gal, tomatoes, tomato companions signals az

Asparagus produces a chemical that kills tomato nematodes, while tomatoes contain solanine that is toxic to asparagus beetles, actual companion plants. Tomatoes grow tall, creating shade around asparagus plants, and preventing weeds from invading the bed.

Borage is planted with tomatoes for several reasons. It deters tomato hornworms and cabbage worms. Tomato health and flavor are also elevated.

Calendula leaves and blooms are edible and taste delicious in salads. Similar in style to marigolds, when planted between tomato plants, calendula is a natural way to control pests that feast on tomato plants. Impress your friends by topping a salad with some of these fetching flowers.

Carrots and tomatoes share space well. You can plant carrots when tomatoes are small and will be ready to harvest by the time the tomatoes grow more prominent and need room. This is a great way to increase the garden’s yield if you need more space.

Chive is a stunning herb that helps improve the taste of tomatoes, repels aphids, and is an excellent addition to any tomato salad.

Garlic, when planted near tomatoes, helps keep spider mites at bay. Who doesn’t enjoy fresh garlic on their bruschetta. . . Yum!

Leaf lettuce with your tomatoes is a green mulch keeping tomato roots cool. It reduces the chance of disease spreading from the soil to your tomato leaves.

Marigolds are considered a must when growing tomatoes for many gardeners. Many gardeners only consider growing tomatoes with marigolds. These bright and chipper annuals do mighty wonders when deterring pests. They produce a substance known as alpha-terthienyl. This substance also reduces root-knot nematodes in the soil.

Mint makes a beautiful ground cover that can be aggressive. Pick your flavor of mint; all pests detest the smell, including small rodents. Plant a container of mint for easy control and place it in the garden.

Nasturtiums add color and cheer to your garden but also protect tomato plants. They deter whiteflies, squash bugs, beetles, and aphids while preventing fungal diseases.

If you want the most from your tomatoes this year, consider some of these companion plants.

Gardening, houseplants, Ken Lain, The Mountain Gardener, Prescott, Watters Garden Center, Yellow leaves,

Join the garden for fun! Free garden classes are offered every Saturday from 9:30 to 11 at Watters Garden Center where we go deep into growing better. Check out this spring schedule posted at: and look for the ‘Garden Class’ link. You can also visit the garden center for a program.

April 14 at 3:00 pm – My First Herb and Vegetable Gardens

April 21 at 3:00 pm – New Flower Introductions for 2023

2023 April Garden Class Schedule

Until next week, I’ll be helping gardeners grow better here at Watters Garden Center.

This article was written by Ken Lain. He can be found throughout the week at Watters Garden Center, 1815 W. Iron Springs Rd in Prescott, or contacted through his website at or

Get more gardening tips from Watters Garden Center in the Mountain Gardener Column on Signals A

Watters Garden Center, open house, The Mountain Gardener, Ken Lain, Lisa Watters-Lain,

Advertise your deals with Talking Glass Media iDealios.

Learn more: 

If you like this story, consider subscribing to Signals Updates, Entertainment Events & News!

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.