8 Plants You Should Always Grow Next to Sunflowers, According to Horticulturists

Coneflower

Coneflower—also called echinacea—is an ideal companion for sunflowers. It draws pollinators, requires similar growing conditions, and produces a range of warm-toned blooms that complement the sunflower's iconic color.

"Echinacea pairs beautifully with sunflowers in both form and function," says Funk, who recommends the Cheyenne Spirit variety. "Both enjoy full sun and well-drained soil, and echinacea blooms around the same time."

• Zones: 4 to 9
• Size: 1 to 2 feet tall x 1 to 2 feet wide
• Care requirements: Full sun; well-drained sandy or loamy soil
  

Marigolds

Marigolds aren’t just a pretty addition to your flower bed—they're also known for their pest-repellent abilities.

These flowers can keep aphids, mosquitoes, whiteflies, and nematodes away from your other plantings, says Sally McCabe, associate director of community engagement at the Pennsylvania Horticultural Society.

Pair these full-sun favorites in well-drained soil alongside sunflowers for a bright, cheerful layout.

• Zones: 2 to 11
• Size: 6 to 36 inches tall x 6 to 18 inches wide
• Care requirements: Full sun; well-drained soil
  

Black-Eyed Susan

Black-eyed Susans are famous for their brilliant yellow petals; planted near sunflowers, they'll boost the brightness factor of any garden. Funk also recommends the Cherry Brandy variety, which produces a contrasting, reddish-pink bloom.

“This tough perennial thrives in similar conditions and blooms at the same time as sunflowers, making them ideal visual and ecological partners," she says. "Cherry Brandy grows only 2 inches high, making it a perfect front-of-the-border companion."

• Zones: 3 to 9
• Size: 2 to 3 feet tall x 1 to 2 feet wide
• Care requirements: Full sun; well-drained soil

Russian Sage

Russian sage blooms with a bounty of tube-shaped, bluish-purple flowers—a striking visual backdrop against the round heads and gold petals of sunflowers.

“This drought-tolerant perennial adds texture and contrast to sunflowers," says Funk. "The silvery foliage and lavender blooms of the Denim ‘n Lace variety attract pollinators and thrive in sunny beds."

• Zones: 4 to 9
• Size: 2 to 3 feet tall x 2 to 3 feet wide
• Care requirements: Full sun; well-drained soil

Yarrow

The tiny yellow centers of Sassy Summer Sunset yarrow match the bold hues of sunflowers; this plant's natural ability to repel unwelcome bugs protects its companions.

"Yarrow is a resilient perennial that draws in beneficial insects and deters pests," says Funk. "It can tolerate dry soils and thrives in similar conditions as sunflowers."

• Zones: 3–8
• Size: 2 to 3 feet tall x 2 to 3 feet wide
• Care requirements: Full sun; well-drained, low fertility soil
  

Asparagus

Asparagus and sunflowers may not seem like an obvious pairing, but they complement each other seamlessly in a vegetable garden.

"As a spring-harvested perennial, asparagus grows and is harvested long before sunflowers reach full height," she says. "The tall sunflower stalks offer light summer shade that can help protect asparagus ferns from scorching, while both plants enjoy rich, well-drained soil."

• Zones: 3 to 8
• Size: 3 to 5 feet tall x 1 to 3 feet wide
• Care requirements: Full sun to partial shade; rich, well-drained soil with good moisture retention

Garlic

Garlic and its allium relatives provide natural pest protection for your sunflowers, says McCabe.

Garlic’s tall, skinny leaves and underground bulb are essential for any kitchen garden; its distinct fragrance deters aphids, Japanese beetles, and other unwelcome insects.

• Zones: 2 to 11
• Size: 18 inches tall x 3 inches wide
• Care requirements: Full sun; well-drained soil
  

Zinnia

Complement colorful sunflowers with bright flowers like zinnias.

“These vibrant companions draw in essential pollinators, enhancing both the productivity and aesthetic appeal of your sunflower patch,” says McCabe. Red, pink, orange, and yellow zinnias are also fast and easy to grow, providing a citrus-hued backdrop for your sunflowers in no time.

• Zones: 2 to 11
• Size: 8 to 48 inches tall x 1 to 3 inches wide
• Care requirements: Full sun; well-drained, moderately fertile soil