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How to Grow Superbena Scarlet

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Superbena Scarlet

Verbena × hybrida 'Superbena Scarlet'

flower

Superbena Scarlet is a vibrant, award-winning verbena cultivar known for its brilliant red flowers and exceptional heat and drought tolerance. This low-growing, spreading perennial is typically grown as an annual and produces clusters of tiny flowers continuously throughout the growing season. It's ideal for containers, hanging baskets, border edging, and mass plantings where bold color impact is desired.

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Example Superbena Scarlet timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Superbena Scarlet

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Superbena Scarlet blooms

    Around Jun 1

    ≈ 45 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Superbena Scarlet dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily (prefers 8+ hours for best flowering)
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Water: Moderate water needs; drought tolerant once established. Water when top inch of soil is dry. Avoid overwatering, which promotes fungal issues. In containers, water more frequently than in-ground.
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Spacing: 12 inches
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Days to maturity: 45-60 days
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Planting depth: Plant transplants at soil surface; do not bury stem. Seeds should be surface-sown or barely covered.

Soil

Type: Well-draining loamy to sandy soil
pH: 6.0-7.0
Amendments:
Perlite or coarse sand for drainage Compost for light nutrition Avoid heavy clay or waterlogged soil

Growing Zones

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Thrives in zones 3-10; perennial in zones 9-10, annual elsewhere

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b

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Growth Stages

1

Seedling

2-3 weeks

Tiny seedlings emerge with cotyledons and first true leaves; very delicate at this stage.

Keep soil consistently moist but not waterlogged. Provide bright, indirect light. Thin to desired spacing once true leaves appear.

2

Vegetative Growth

3-4 weeks

Plant develops branching stems and deeper root system; no flowers yet. Becomes more robust and fills out container or space.

Pinch back terminal growth when plant is 6 inches tall to encourage bushier, more compact growth. Begin fertilizing weekly with balanced or slightly lower nitrogen formula.

3

Flowering Initiation

1-2 weeks

Terminal clusters of buds form; first flowers begin opening. Plant transitions from vegetative to reproductive growth.

Continue pinching for desired shape if needed, but allow more flowers to develop. Switch to higher phosphorus/potassium fertilizer to support blooming. Ensure consistent watering.

4

Peak Bloom

8-12 weeks (extends with deadheading)

Abundant bright red flower clusters cover the plant; continuous blooming throughout season if well-maintained.

Deadhead spent flowers regularly to encourage continuous blooming. Water consistently and feed every 2 weeks with bloom-booster fertilizer. Monitor for pests and disease.

5

Late Season

Flowering may slow if temperatures become extreme or if plant becomes stressed; foliage may look slightly tired by fall.

Continue deadheading and watering. In zones 9-10, reduce watering to encourage dormancy. Cut back hard in fall if overwintering as perennial. In colder zones, enjoy until frost.

Companion Planting

Plan your garden →

Plant with:

Dusty Miller Marigold Salvia Lantana Petunias Sweet Alyssum Ornamental grasses Sedum

Avoid planting near:

Plants requiring frequent watering Heavy feeders that deplete soil nutrients

Common Pests

  • Ensure good air circulation. Avoid overhead watering. Spray with sulfur dust or fungicide if needed. Resistant cultivar; rarely problematic.

  • Increase humidity and mist foliage in dry conditions. Spray with insecticidal soap or neem oil. Prune heavily infested branches.

  • Use yellow sticky traps to monitor. Spray with insecticidal soap, neem oil, or horticultural oil. Remove heavily infested plant parts.

  • Spray with strong water stream to dislodge. Use insecticidal soap or neem oil. Encourage natural predators like ladybugs.

Uses

🏠

Container and Hanging Basket Beauty

Household

Superbena Scarlet's spreading, mounding habit makes it perfect for containers, hanging baskets, and window boxes. The cascading growth and continuous scarlet blooms provide vibrant color from spring through frost with minimal fuss. [source]

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Heat and Drought Tolerant Landscape Plant

Household

Ideal for hot, dry gardens and xeriscaping projects where water conservation is important. Once established, it requires minimal watering and thrives in challenging conditions where many other flowers struggle. [source]

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Pollinator Attraction

Wildlife

Verbena flowers are highly attractive to butterflies, bees, and hummingbirds, making Superbena Scarlet valuable for pollinator gardens. The continuous blooms throughout the season provide reliable nectar sources. [source]

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Edible Flowers

Culinary

Verbena flowers are technically edible with a slightly citrusy, minty flavor and can be used as garnish for drinks or desserts. Note: Always verify no pesticides have been applied before consuming. [source]

💊

Traditional Herbal Tea

Medicinal

Verbena (traditionally V. officinalis) has been used in herbal medicine for calming and digestive properties. While ornamental verbenas differ from medicinal species, some gardeners brew tea from flowers and leaves for traditional wellness uses. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Superbena Scarlet is grown for ornamental flowers, not harvest in the traditional sense. Deadhead spent flower clusters regularly by pinching off with fingers or pruning shears to promote continuous blooming and maintain compact shape. Cut stems for fresh arrangements when flowers are fully open; blooms last several days in a vase.

Fun Facts

  • 🌱 Superbena Scarlet is an All-America Selections (AAS) award winner, recognized for exceptional garden performance and ornamental qualities.
  • 🌱 Despite being called 'verbena,' modern hybrid Superbena cultivars are actually crosses bred for superior disease resistance and continuous blooming compared to heirloom verbena species.
  • 🌱 This cultivar can be overwintered indoors in a cool, bright location (around 50-60°F) and will reflush with blooms when brought back into warm, sunny conditions in spring.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Annual Cultivar Deadhead Full Sun Perennial pH Pinch Back True Leaves
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