How to Grow Supertunia Petunia Plus Coral
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Supertunia Petunia Plus Coral
Petunia × hybrida 'Supertunia Coral'
flowerSupertunia Petunia Plus Coral is a vibrant, coral-colored hybrid petunia bred for exceptional vigor, disease resistance, and continuous blooming. This cultivar produces abundant 2-3 inch flowers on a spreading, mounding habit, making it ideal for containers, hanging baskets, and landscape beds. It's a modern ornamental known for its self-cleaning properties and low-maintenance requirements.
When should you plant Supertunia Petunia Plus Coral in your zone?
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Example Supertunia Petunia Plus Coral timeline · Pittsburgh, PA (Zone 6b)
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Plant Supertunia Petunia Plus Coral
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Supertunia Petunia Plus Coral blooms
Around Jun 1≈ 45 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Supertunia Petunia Plus Coral dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives as an annual in zones 2-11; overwinters in zones 9-11
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Get my Supertunia Petunia Plus Coral timeline →Growth Stages
Seedling
7-10 daysTiny cotyledons emerge, followed by first true leaves. Plant is very fragile and small, typically 1-2 inches tall.
Maintain high humidity and warm temperatures (70-75°F). Provide bright, indirect light. Keep soil moist but not soggy. Avoid damping-off by ensuring good air circulation.
Vegetative Growth
3-4 weeksPlant develops multiple stems and leaves, becoming bushier. Reaches 4-8 inches before flowering begins.
Pinch terminal tips when 3-4 inches tall to encourage branching. Maintain consistent moisture and provide 6+ hours of light daily. Apply balanced fertilizer every 2 weeks.
Flowering
8-16 weeks (spring through fall)Abundant coral-colored blooms appear on branch tips. Plant reaches mature spreading/mounding form (12-15 inches wide, 8-12 inches tall).
Deadhead spent flowers regularly to encourage more blooms (though cultivar is largely self-cleaning). Water deeply and fertilize weekly with bloom-boosting fertilizer (higher phosphorus). Monitor for pests and disease.
Peak Bloom & Maintenance
2-4 monthsPlant is full, floriferous, and colorful. Flowers continuously if conditions are favorable.
Continue weekly watering and fertilizing. In extreme heat (>90°F), provide afternoon shade to prevent flower fade. Pinch leggy stems as needed. Watch for fungal issues in high humidity.
End of Season
2-4 weeks (varies by region)Blooming slows in fall as temperatures drop and daylight decreases. Plant may decline in cold climates (below 50°F at night).
Reduce fertilizing in late summer. In zones 9-11, cut back by one-third and mulch to encourage overwintering. In colder zones, pull plant at first frost or treat as annual.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with insecticidal soap or neem oil. Introduce ladybugs. Rinse plants with strong water spray.
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Use yellow sticky traps. Spray with neem oil or insecticidal soap weekly. Improve air circulation.
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Remove affected flowers. Spray with spinosad or neem oil. Use blue sticky traps.
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Increase humidity. Spray with neem oil or miticide. Rinse leaves regularly with water.
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Allow soil to dry between waterings. Use yellow sticky traps. Apply sand layer on soil surface.
Uses
Edible Flowers
CulinaryPetunia flowers are edible and can garnish salads or desserts, offering a mild, slightly sweet flavor. Use pesticide-free blooms only. [source]
Container & Landscape Gardening
HouseholdSupertunia Coral is widely used in hanging baskets, window boxes, mixed containers, and garden beds for long-lasting color and ease of care. [source]
Pollinator Support
WildlifePetunia flowers attract bees, butterflies, and hummingbirds, making them valuable for supporting pollinator populations in gardens. [source]
Fresh and Dried Flower Arrangements
CraftCoral petunias can be used in fresh floral displays and arrangements. Dried petals can be used in potpourri or craft projects. [source]
Traditional Herbal Uses
MedicinalPetunia has been used in traditional herbalism for mild digestive and anti-inflammatory properties, though modern scientific evidence is limited. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
This is an ornamental flower, not harvested for food or traditional uses. Pinch off spent blooms to encourage continuous flowering (though Supertunia varieties are largely self-cleaning and drop old flowers naturally). Harvest flower sprigs for fresh arrangements by cutting stems in early morning. Cut back stems by one-third to one-half in mid-summer if plant becomes leggy to rejuvenate blooming.
Fun Facts
- 🌱 Supertunia is a brand name owned by Ball Seed Company, and the 'Plus' series was specifically bred for increased vigor, disease resistance, and weather tolerance compared to standard petunias.
- 🌱 Petunias are native to South America (primarily Argentina, Brazil, and Paraguay) and were first cultivated by indigenous peoples before being introduced to Europe in the 1800s.
- 🌱 The name 'petunia' comes from the Guaraní word 'petun,' referring to tobacco plants, as petunias and tobacco are both in the Solanaceae (nightshade) family.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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