Zinnia Companion Plants: The Ultimate Guide

If you're looking for the perfect flower to add color and vibrancy to your garden, look no further than zinnias. These cheerful blooms come in a wide range of colors and varieties, making them a popular choice for gardeners of all levels. But did you know that there are also many plants that make great companion plants to zinnias? In this article, we'll explore some of the best options for zinnia companion plants and how they can benefit your garden.

Zinnias are sun-loving annuals that are easy to grow and care for. They come in a range of heights, from dwarf varieties that reach only a few inches tall to tall types that can grow up to three feet or more. Some popular zinnia varieties include the California Giant, the Lilliput Mix, and the Profusion series.

One of the great things about zinnias is that they attract pollinators like bees and butterflies to your garden. This can help to increase the yield of other plants in your garden and promote overall plant health. But zinnias also benefit from having companion plants nearby. Companion plants can help to repel pests, provide shade, and even improve soil quality.

So without further ado, let's dive into some of the best options for zinnia companion plants.

1. Marigolds

Marigolds are an excellent choice for a zinnia companion plant. Not only do they share similar growing requirements, but marigolds are also known to repel pests like nematodes and whiteflies. Plus, their bright orange and yellow flowers make a beautiful contrast against the rich hues of zinnias.

When planting marigolds as a companion to zinnias, be sure to choose varieties that are similar in height. French marigolds and signet marigolds are both good options. Plant them in between your zinnias to create a colorful border around your garden beds.

2. Cosmos

Cosmos are another great choice for a zinnia companion plant. Like zinnias, they are sun-loving annuals that come in a range of colors and heights. Cosmos are also known for attracting butterflies and other pollinators to your garden.

When planting cosmos with zinnias, choose varieties that are similar in height and color. The Sensation Mix and the Sonata Mix are both good choices. Plant them throughout your zinnia beds to create a beautiful and diverse display.

3. Nasturtiums

Nasturtiums are a versatile flower that can be grown as both an annual and a perennial. They have bright, showy flowers that come in shades of red, orange, and yellow. Nasturtiums are also known to repel aphids and other pests, making them a great choice for a zinnia companion plant.

When planting nasturtiums with zinnias, choose varieties that are similar in height. Tropaeolum majus is the most common type of nasturtium and comes in both climbing and bush varieties. Plant them in the same bed as your zinnias to help repel pests and add color to your garden.

4. Salvia

Salvia is a herbaceous perennial that comes in a wide range of colors and varieties. They are known for their long, tubular flowers that attract hummingbirds and other pollinators to your garden. Salvia is also a great choice for a zinnia companion plant because it is known to repel pests like aphids and whiteflies.

When planting salvia with zinnias, choose varieties that are similar in height and color. Some popular types of salvia include the Blue Hill, the Black and Blue, and the Victoria Blue. Plant them throughout your zinnia beds to create a beautiful and fragrant display.

5. Sunflowers

Sunflowers are an iconic summer flower that can add height and drama to your garden. They are also known to attract bees and other pollinators to your garden, making them a great choice for a zinnia companion plant.

When planting sunflowers with zinnias, be sure to choose varieties that are similar in height. Dwarf sunflowers like the Teddy Bear and the Little Becka are good choices for smaller gardens. Taller varieties like the Russian Giant and the Mammoth Grey Stripe are perfect for adding drama to larger garden beds.

6. Verbena

Verbena is a sun-loving annual that comes in a range of colors and heights. They are known for their delicate, lacy flowers that bloom all summer long. Verbena is also a great choice for a zinnia companion plant because it attracts butterflies and other pollinators to your garden.

When planting verbena with zinnias, choose varieties that are similar in height and color. The Quartz series and the Tuscany series are both good options. Plant them throughout your zinnia beds to create a beautiful and colorful display.

7. Petunias

Petunias are a popular choice for gardeners because they come in a wide range of colors and are easy to care for. They are also a great choice for a zinnia companion plant because they attract pollinators like bees and hummingbirds to your garden.

When planting petunias with zinnias, choose varieties that are similar in height and color. Some popular types of petunias include the Wave series, the Supertunia series, and the Surfinia series. Plant them throughout your zinnia beds to add color and attract pollinators.

8. Lantana

Lantana is a shrub-like perennial that comes in many different colors and varieties. They are known for their clusters of small, brightly colored flowers that attract butterflies and other pollinators to your garden. Lantana is also a great choice for a zinnia companion plant because it repels pests like whiteflies and spider mites.

When planting lantana with zinnias, choose varieties that are similar in height and color. The ‘Miss Huff’ variety is a popular choice for its bright orange and yellow flowers. Plant them throughout your zinnia beds to add color and repel pests.

9. Ageratum

Ageratum is a sun-loving annual that comes in shades of blue, pink, and white. They are known for their fluffy, button-like flowers that bloom all summer long. Ageratum is also a great choice for a zinnia companion plant because it attracts bees and other pollinators to your garden.

When planting ageratum with zinnias, choose varieties that are similar in height and color. The Blue Horizon and the Hawaii series are both good choices. Plant them throughout your zinnia beds to create a beautiful and colorful display.

10. Black-eyed Susans

Black-eyed Susans are a native wildflower that is easy to grow and care for. They have bright yellow petals and dark brown centers that resemble an eye. Black-eyed Susans are also a great choice for a zinnia companion plant because they attract butterflies and other pollinators to your garden.

When planting black-eyed Susans with zinnias, choose varieties that are similar in height. The Goldsturm and the Irish Eyes are both good options. Plant them throughout your zinnia beds to add color and attract pollinators.

11. Nicotiana

Nicotiana is a sun-loving annual that comes in shades of pink, white, and red. They are known for their fragrant, trumpet-shaped flowers that bloom all summer long. Nicotiana is also a great choice for a zinnia companion plant because it attracts moths and other pollinators to your garden.

When planting nicotiana with zinnias, choose varieties that are similar in height and color. The Sylvestris and the Perfume series are both good options. Plant them throughout your zinnia beds to add fragrance and attract pollinators.

12. Dusty Miller

Dusty Miller is a perennial herb that is grown as an annual in most regions. It has silver-gray leaves that provide a beautiful contrast against the rich colors of zinnias. Dusty Miller is also a great choice for a zinnia companion plant because it repels pests like aphids and whiteflies.

When planting dusty miller with zinnias, choose varieties that are similar in height. The Cirrus and the Silverdust are both good options. Plant them in between your zinnias to create a beautiful border around your garden beds.

13. Geraniums

Geraniums are a popular choice for gardeners because they come in a wide range of colors and are easy to care for. They are also a great choice for a zinnia companion plant because they repel pests like Japanese beetles and cabbage worms.

When planting geraniums with zinnias, choose varieties that are similar in height and color. The Maverick series and the Orbit series are both good options. Plant them throughout your zinnia beds to add color and repel pests.

14. Dahlias

Dahlias are a beloved summer flower that come in a wide range of colors and shapes. They are also a great choice for a zinnia companion plant because they attract bees and other pollinators to your garden.

When planting dahlias with zinnias, choose varieties that are similar in height. The Mystic series and the Twynings After Eight are both good options. Plant them throughout your zinnia beds to add drama and attract pollinators.

15. Sweet Alyssum

Sweet Alyssum is a sun-loving annual that comes in shades of pink, purple, and white. They are known for their delicate, sweet-smelling flowers that bloom all summer long. Sweet Alyssum is also a great choice for a zinnia companion plant because it attracts beneficial insects like lacewings and ladybugs to your garden.

When planting sweet alyssum with zinnias, choose varieties that are similar in height and color. The Snow Princess and the Easter Bonnet series are both good options. Plant them throughout your zinnia beds to add fragrance and attract beneficial insects.

Zinnias are a beautiful and easy-to-grow flower that can add color and vibrancy to your garden. But by planting zinnia companion plants, you can also improve soil quality, repel pests, and attract pollinators to your garden. Some of the best options for zinnia companion plants include marigolds, cosmos, nasturtiums, salvia, sunflowers, verbena, petunias, lantana, ageratum, black-eyed Susans, nicotiana, dusty miller, geraniums, dahlias, and sweet alyssum. By incorporating these plants into your garden, you can create a beautiful and diverse display that will bring joy to your family and visitors alike.

Frequently Asked Questions (FAQ)

Q1. Can zinnias be planted with vegetables?

Yes, zinnias can be planted with vegetables. They attract pollinators like bees and butterflies to your garden, which can help to increase the yield of other plants in your garden.

Q2. What is the best time to plant zinnias?

The best time to plant zinnias is in the spring, after the last frost has passed. Zinnias prefer warm soil temperatures, so it's important to wait until the soil has warmed up before planting.

Q3. How often should I water my zinnias?

Zinnias prefer well-draining soil that is kept evenly moist. Water them deeply once a week, or more frequently during hot, dry weather.

Q4. Can zinnias grow in containers?

Yes, zinnias can be grown in containers. Choose a container that is at least 12 inches wide and deep, and fill it with a high-quality potting mix. Be sure to water your zinnias regularly, as container-grown plants tend to dry out more quickly than those grown in the ground.

Q5. Do zinnias attract pests?

Zinnias are generally not prone to pest problems. However, they can occasionally attract aphids and spider mites. If you notice an infestation, treat your plants with an insecticidal soap or neem oil spray.

Q6. Should I deadhead my zinnias?

Yes, deadheading your zinnias can help to promote continued blooming throughout the summer. Simply pinch off spent blooms as soon as they to fade.

Q7. How do I fertilize my zinnias?

Zinnias are heavy feeders and require regular fertilization to thrive. Use a balanced fertilizer, such as a 10-10-10 or 20-20-20 blend, every two to four weeks during the growing season.

Q8. Can zinnias be grown as perennials?

No, zinnias are annuals and typically only last for one growing season. However, they will often reseed themselves in the garden, producing new plants the following year.

Q9. What is the best way to propagate zinnias?

Zinnias can be propagated by seed or by taking stem cuttings. To propagate by seed, collect the seeds from mature zinnia flowers and plant them directly in the ground or in containers. To propagate by stem cuttings, take a 4-6 inch cutting from a healthy zinnia plant and root it in water or a rooting hormone.

Q10. How do I overwinter my zinnias?

Zinnias are not cold-hardy and cannot survive freezing temperatures. If you want to save your zinnias for the following year, you can try digging up the plants and storing them indoors in a cool, dry location. Alternatively, you can collect the seeds and plant them again in the spring.