Marigold Companion Plants (What to Grow & What not to)

The image represents marigold flower.
Marigold acts as a pest repellant and is a good companion to many plants.

The colorful florets of marigold cupped by the green calyx add spark to your garden and attract the eyes of any beholder. 

If you want to add beauty to your garden and benefit other plants side by side, I suggest you try companion planting with Marigold. I’m sure you won’t regret it! 

Generally, there are several good marigold companion plants that represent herbs, including basil, mint, rosemary, and pepper. Besides, Tomato, squash, and cauliflower are vegetables for marigolds, whereas zinnia, lavender, and cosmos are ornamental flowers that also grow well with marigolds. 

Marigold and zinnia planted together.
Marigold and zinnia look beautiful when paired together.

Marigold companion planting is the best practice if you wish to keep your garden or mini jungle pesticide-free.

If you want to continue this companion planting instantly or in the future, this article will be your perfect guide.

What are the Benefits of Marigold Companion Planting?

Marigold (Tagetes sp.) is a member of the family Asteraceae.

These natives of Mexico have three popular varieties, including African Marigold (Tagetes erecta), French Marigold (Tagetes patula), and Signet Marigold(Tagetes tenuifolia).

Marigolds are annual flowers except for Mexican tarragon (Tagetes lucida), Lemmon’s marigold (Tagetes lemmonii), and mountain marigold (Tagetes palmeri), which are perennial species of marigold.

The image represents african marigold.
African marigold is a popular variety of marigold.

They grow in a slightly acidic to neutral (pH-6.0 to 7.0) well-drained soil and require full sun exposure to bloom. 

If you want to plant marigolds with their companions, you should choose the ones with similar growing conditions as marigolds. This way, the two plants can grow together and share a beneficial relationship.  

It is a common myth that you must not plant two plants next to each other. However, gardeners’ long experiments support the reasons for planting two plants together.

Natural Pesticide

Marigold is a well-known plant for pest control. As a companion plant, marigold produces chemicals that act as pest repellants.

They can also be used as trap crops to trap and kill the pests and insects that harm the garden. In addition, marigolds secrete alpha-terthienyl from their roots, preventing the development of nematodes in the leaves. 

By controlling the pests, marigolds promote the growth of other plants.

Attracts Pollinators and Beneficial Insects

As a companion plant, marigold attracts pollinators like bees and butterflies to your garden. The cherry on top, it doesn’t compete with its good companions for nutrients and space.

Moreover, the diversity of different plants and flowers help to attract other beneficial insects like ladybugs and ground beetles to the garden.

Bee on a marigold flower.
The flower of the marigold attracts pollinators like bees.

Provide Necessary Shade

Marigold can tolerate bright sunlight and full sun exposure. You can utilize this feature of marigold to offer shade to shade-loving herbs like thyme and oregano.

Besides, Microbiological Research shows that methanol extracted from French marigolds works as an antifungal.

What are Good Companions Of Marigolds?

Various herbs, vegetables, and ornamental flowers flourish well when planted with marigold. Sometimes, the companions function together to benefit the garden.

See in detail how marigold benefits these plants when planted together.

1. Herb Plants

Some aromatic herbs serve as best marigold companion plants because the fragrance of these herbs is unappealing to some pests. Therefore, they act as pest repellants and prevent your garden from pest infestation. 

In addition to preventing unwanted pests, companion herbs attract beneficial insects to the garden.

Let’s talk about some herbs that pair well with marigolds in your garden.

Basil

The first pair for better companion planting is the marigold-Basil pair. 

Like marigold, basil requires bright sun,well-drained soil, and a neutral pH to grow. 

Marigold and basil planted together.
Marigold and basil act as excellent natural insect repellent together.

Thus, a combination of marigold and basil acts as an excellent natural insect repellent. Since they both produce fragrances that repel insects, pairing them builds up a robust aromatic shield that repels harmful insects.

Mint

The growing condition of mint is similar to that of marigold. It prefers full sun exposure and well-drained acidic to neutral soil. 

The combination of mint and marigold creates a fragrant forcefield and attracts pollinators like bees and butterflies to the garden. They also minimize the pests in your garden because of the strong aroma.

Rosemary

Rosemary is another herb in the list of marigold companion plants. It is a perennial herb that prefers well-drained acidic soil. Like marigold, it requires full sun exposure to flourish. 

The image represent rosemary and marigold planted together.
Marigold can be a good companion to rosemary by repelling insects.

Rosemary and marigold are known for their natural insect repelling properties.

Pepper 

Marigold acts as an excellent companion to pepper aesthetically. The beautiful flowers of marigold attract pollinators and repel pests that ruin a pepper crop.

As pepper plants are highly susceptible to soil nematodes, marigold act as excellent companions by removing the soil nematodes.

2. Vegetables 

Not only do marigolds look lovely in the flowering garden, but they also make an excellent addition to your vegetable garden. 

Though most gardeners do not add flowers to the vegetable garden, you can try adding marigolds to your vegetable garden.

Tomatoes

Did you know that marigolds and tomatoes are best friends? 

Tomatoes are susceptible to root-knot-nematodes, whereas marigolds resist these nematodes under the soil. Being resistant, marigold helps to minimize the effect of these nematodes in tomatoes.

Similarly, when planted near tomatoes, marigold adds a defense layer and repels nematodes, worms, and other pests that attack tomatoes. 

French marigold produces a chemical, limonene, that attracts whiteflies and prevents tomatoes from whiteflies when planted near tomatoes.

The image represents marigold and tomato planted together.
Marigolds are a good addition to the tomato garden.

What’s amazing to know is some marigolds also produce chemicals in their roots that kill nematodes and protect the tomatoes.

That is what a best friend does! 

Squash

Though squash is easy to grow, it can attract certain difficult-to-control pests when you grow it organically. For such situations, companion planting is a great tool for keeping your vegetables healthy.

Cucumber beetles are pests that feed on leaves, flowers, and fruits of squash. 

When planted alongside squash, marigold repels cucumber beetles and other beetles and protects the squash plants.

Therefore, marigold acts as a trap crop and repels insects away from the squash plant.

Cauliflower

Cauliflower and marigold have similar growing conditions, i.e., both prefer slightly acidic or neutral soil and enjoy full exposure to sunlight.

Marigolds are valuable to cauliflower gardens because they repel pests like aphids and nematodes away from the cauliflower. Thus, cauliflower is a favorite crop of these pests to munch.

Marigold attracts the rape blossom beetle away from cauliflower.

Further, marigold does not pull moisture from the soil.

Marigold and cauliflower planted together.
Marigold repels aphids and nematodes away from the cauliflower

Onion 

Marigold acts as an attractive plant to the parasitoids, which kill the insects that are the enemies of the onion field. Furthermore, marigold provides a good food source for aphid parasitoids, indirectly helping to enhance onion growth.

Parasitoids are the insects whose larvae kill the insects that harm the plants.

But your pretty marigold has now turned into a defender of your garden. Keep reading because, in the end, you will continue to know various versions of marigold! 

3. Ornamental Flowers 

The vibrant colors of marigold flowers can pair beautifully with other flowers in your garden.

If you wish to enhance the beauty of your marigold garden by pairing it with other flowers together, here are the suitable options of flowers for you! 

Zinnia

Being members of the same family, Asteraceae, Zinnia has the same growing conditions as marigold and thus is its excellent companion.

Marigold and zinnia are warm-season bloomers and prefer a location under the sun. Likewise, they also prefer well-drained and slightly acidic soil. 

Marigold and zinnia planted together.
Marigold and zinnia look beautiful when paired together.

As the multiple colors of zinnia look stunning when paired with marigolds, zinnia and marigold make a perfect combination for flower gardens, landscapes, or pots.

As both flowers are easy to grow and do not compete for each nutrient, they can be perfect companions. 

Though many gardeners consider beans and cabbage as bad companions for marigolds, there is no evidence for it.  

Lavender 

Margold and lavender are both easy to care for. Both being attractive plants, they also attract a large number of pollinators and other beneficial insects.

Marigold and lavender planted t ogether.
Marigold and lavender attract a large number of pollinators.

The leaves of lavender have a peculiar scent, and when grown as borders around marigolds, lavender creates a barrier to insects and pests that attack other surrounding plants.

Cosmos 

As cousins from the same family, cosmos and marigolds have the same native habitat.

Both flowers have similar sizes, whereas their different bloom shapes and contrasting colors add to the visual attraction of the garden.

The bloom shape of the marigold is round, whereas the cosmos has flat and more open in shape.  

Marigold and cosmos planted together.
The contrast in shape and color between the cosmos and marigold flowers adds attractiveness to the garden. 

In addition, the variation in foliage texture of cosmos and marigold offers a nice contrast. The cosmos leaves are threadlike, whereas the leaves of marigold are lanceolate.

Along with adding contrasting beauty to the garden, the attractive flowers of Cosmos and marigold attract pollinators to the garden.

If you have already grown cosmos, you may become happy knowing cosmos flower symbolism.

Bachelor’s Button (Corn Flower)

The bright yellow or orange flowers of marigold can pair beautifully with the blue or purple blooms of the Bachelor’s Button.

In addition, the bachelor’s button is an annual flower that shares the same growing requirements and blooming period as a marigold.

Bachelor's Button and Marigold can grow together.
Bachelor’s button requires the same growing conditions as a marigold

The bachelor’s button with 1-3 feet in height is suitable to plant with the dwarf varieties of marigolds. 

After getting the shades of blue and orange decorating your garden, I’m sure you can be impatient to plant the bachelor’s button and marigold together.

Creeping thyme, allium,roses, geranium,broccoli,  lettuce, pumpkins, cucumbers, asparagus, eggplants, gourds, kale, potatoes, onion, and melon are other good companions of marigold.

Conclusion 

There is a myth that you cannot plant two plants together. However, growing two plants together can promote each other’s growth and add diversity to your garden.

The same goes for marigolds and their companion plants, but it is essential to identify the good and bad companions for your marigold plant.

I hope my experience with marigold companion planting may help you beautify your garden. 

If you own other houseplants, you may also need to know the companions of blueberry and raspberry.

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