Petunias are a garden classic, with colorful flowers thatbloom all season long. But petunias don't have to fly solo in your garden or containers. Companion planting allows you to create stunning petunia combinations that are both appealing and beneficial for the plants.
Let's explore 22 excellent petunia companion plants. Mix and match from this list to design eye-catching potted arrangements, window boxes, hanging baskets or flower beds.
1. Verbena
Superbena® Red (Verbena hybrid)
Verbena's clusters of vivid blooms complement petunias beautifully. Plus, verbena attracts butterflies and other beneficial pollinators to your garden.
Hardy in zones 8-11, part sun to sun, 6-12" tall, deer resistant
Pairs best with Supertunia®, Supertunia Vista® and Supertunia Mini Vista®.
2. Calibrachoa
Superbells® Lemon Slice® (Calibrachoa hybrid)
With their prolific blooms, these "mini petunias" pair wonderfully with their larger cousins. Calibrachoa comes in a rainbow of colors too.
Hardy in zones 9-11, part sun to sun, 6-12" tall
Pairs best with Supertunia® (in containers only).
3. Sweet Alyssum
White Knight® (Lobularia hybrid)
The trailing habit and sweet fragrance of alyssum make it a perfect companion for petunias. It also brings in helpful insects.
Hardy in zones 9-11, part sun to sun, 8-12" tall
Pairs best with Supertunia Vista® and Supertunia Mini Vista®.
4. Lobelia
Laguna® Sky Blue (Lobelia erinus)
A cascade of lovely lobelia overflowing from a hanging basket alongside petunias makes a stunning display. Lobelia blooms in shades of blue, purple, and white.
Hardy in zones 9-11, part sun to sun, 6-12" tall
Pairs best with Supertunia Mini Vista®.
5. Euphorbia
Diamond Frost® (Euphorbia hybrid)
The light, airy structure of euphorbia balances the boldness of petunias. Use them to provide a great contrast in form and texture. The classic white flowers look great when paired with colored petunias.
Hardy in zones 10-11, part sun to sun, 12-18" tall, deer resistant
Pairs best with Supertunia Vista®.
6. Flossflower
Artist® Blue (Ageratum hybrid)
Ageratum’s fluffy blue or white flowers complement petunias' bold trumpet shapes. And ageratum helps deter deer and other critters from munching on plants.
Hardy in zones 9-10, part sun to sun, 8-12" tall
7. Geraniums
Boldly® Dark Red (Pelargonium interspecific)
Geraniums make great companion plants for petunias, offering a delightful mix of bright, bold colors and forms. As a bonus, they are heat tolerant and bloom all summer long.
Hardy in zones 9-11, part sun to sun, 10-12" tall
8. Salvia
Rockin'® Fuchsia (Salvia hybrid)
Spiky salvias with their bee-attracting blooms pop nicely against mounded petunias. Salvias come in reds, purples, pinks, whites and more.
Hardy in zones 9-11, part sun to sun, 24-36" tall, deer resistant
Rockin'® salvias pair best with Supertunia Vista®. Unplugged® salvias pair best with Supertunia® and Supertunia Mini Vista®.
9. Coleus
ColorBlaze® Chocolate Drop (Coleus scutellarioides)
Coleus is all about the fabulous, colorful foliage, which makes a lively contrast next to brightly blooming petunias.
Hardy in zones 10-11, sun or shade, 18-24" tall, deer resistant
ColorBlaze® Drop varieties of coleus pair best with Supertunia Vista®. ColorBlaze® coleus upright varieties pair best with standard Supertunia®. ColorBlaze® Royale varieties of coleus pair best with Supertunia Mini Vista®.
10. Lantana
Luscious® Citrus Blend™ (Lantana camara)
Lantana's flower clusters attract butterflies and pair nicely with petunias. They bloom in oranges, reds, yellows, pinks, purples and more.
Hardy in zones 9-11, sun, 20-30" tall, deer resistant
Pairs best with standard Supertunia®.
11. Marguerite Daisy
Golden Butterfly® (Argyranthemum frutescens)
These cheerful flowers come in shades of white or yellow with bright yellow centers that pop against petunias. Try combining taller, upright Marguerite daisies with trailing petunia varieties in containers.
Hardy in zones 10-11, part sun to sun, 18-36" tall
12. Purple Fountain Grass
Graceful Grasses® Purple Fountain Grass (Pennisetum setaceum 'Rubrum')
The burgundy foliage and feathery plumes of purple fountain grass offer a fantastic color and texture contrast to petunias. This stand-out combination will enhance the appeal and energy of your garden.
Hardy in zones 9-11, part sun to sun, 30-36" tall
Annual fountain grass pairs best with standard Supertunia®.
13. Bacopa
Snowstorm® Giant Snowflake® (Sutera cordata)
The trailing habit of bacopa makes it a perfect filler plant alongside petunias. Its tiny flowers bloom in white, pink or blue.
Hardy in zones 9-11, part sun to sun, 4-8" tall
14. Nemesia
Aromance® Pink(Nemesia fruticans)
Nemesia is a cold-tolerant plant that offers clusters of petite blooms in colors like white, yellow, orange, pink and red. Use them to extend the season before or after your petunias flower.
Hardy in zones 10-11, part sun to sun, 10-14" tall
Pairs best with Supertunia Mini Vista®.
15. Summer Snapdragon
Angelface® Super Blue (Angelonia hybrid)
Often called "summer snapdragon," angelonia produces spikes of flowers that gracefully contrast against mounded petunias. Angelonia blooms in shades of purple, pink, white, and blue.
Hardy in zones 10-11, sun, 18-30" tall, deer resistant
Angelface® Super varieties pair best with Supertunia Vista®. Angelface® Cascade varieties pair best with Supertunia Mini Vista.
16. Fan Flower
Whirlwind® Blue (Scaevola aemula)
These plants produce dozens of petite blooms along their fan-shaped branches. The flowers come in light blues, whites and pinks that complement petunias wonderfully.
Hardy in zones 10-11, sun, 8-14" tall
Pairs best with standard Supertunia® and Supertunia Mini Vista®.
17. Bidens
Goldilocks Rocks® (Bidens ferulifolia)
Bidens have lovely yellow, orange or white daisy-like blooms that complement petunias' colors and form. Bidens is also drought tolerant once established.
Hardy in zones 9-11, sun, 8-14" tall
18. Coneflower
Summersong™ Firefinch™ (Echinacea hybrid)
As a perennial favorite, sturdy and vibrant coneflowers bring the charm of wildflowers, which is a striking contrast to petunias. Plus, coneflowers are excellent at attracting pollinators.
Hardy in zones 4-8, part sun to sun, 12-16" tall, deer resistant
19. Creeping Jenny
Proven Accents® Goldilocks (Lysimachia nummularia)
Trailing creeping jenny is ideal for accenting petunias in containers. Its chartreuse foliage provides a fun pop of color.
Hardy in zones 3-10, part sun to sun, 2-4" tall, deer resistant
20. Wormwood
Proven Accents® Silver Bullet® (Artemisia stelleriana)
Known for its beautiful silvery-green foliage, wormwood is a fantastic accent alongside petunias. In addition, its strong scent deters pests, making it a practical addition to your garden.
Hardy in zones 5-9, sun, 6-10" tall, deer and rabbit resistant
21. Pinks
'Paint the Town Magenta' (Dianthus hybrid)
Low-growing dianthus features fabulous flowers in pinks, reds, and purples. Pair them with petunias as edging along sunny borders and pathways.
Hardy in zones 4-9, part sun to sun, 6-8" tall
22. Butterfly Flower
Stratosphere™ White (Gaura lindheimeri)
Gorgeous gauras produce airy wands of white, pink, or red flowers that provide great vertical contrast next to low-growing petunias.
Hardy in zones 6-10, part sun to sun, 12-24" tall
Let your creativity run wild combining petunias with any of these 22 companion plants for stunning, lively garden displays. Happy gardening!
For best results, plant petunias with companions that have similar sunlight, water, and soil needs. Petunias thrive in full sun and well-drained soil with consistent water. Avoid pairing them with plants that have vastly different growing needs.
For example, shade-loving plants like impatiens and begonias will languish in the full sun needed for petunias. On the other hand, cacti, succulents, and similar dry-climate plants may get too much water when grown alongside thirsty petunias.
Petunias make great companion plants for the veggie garden. Their brightly colored blooms attract pollinating bees and other beneficial insects, and may even repel some unwanted ones! They also act as living mulch to retain moisture and prevent weeds.
