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How to Grow Superbena Plum Purple Verbena

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Superbena Plum Purple Verbena

Verbena × hybrida 'Superbena Plum Purple'

flower

Superbena Plum Purple is a compact, mounding annual flower cultivar known for its deep plum-purple blooms and exceptional heat and drought tolerance. This improved verbena variety produces abundant clusters of small flowers from late spring through fall frost, making it ideal for containers, borders, and hanging baskets. The plant is vigorous yet tidy, rarely requiring deadheading while maintaining continuous blooms.

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Example Superbena Plum Purple Verbena timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Superbena Plum Purple Verbena

    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 Plum Purple Verbena blooms

    Around Jun 1

    ≈ 45 days after planting

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

Growing Conditions

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Sun: Full sun, 6-8 hours daily (prefers 8+ hours for best blooming)
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Water: Moderate water needs; drought tolerant once established. Water when top inch of soil is dry. Avoid overwatering, which can cause root rot and mildew. Water at soil level to keep foliage dry.
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Spacing: 12 inches
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Days to maturity: 45-60 days from transplant to significant bloom
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Planting depth: Surface sow seeds or transplant with soil ball at same depth; seeds need light to germinate

Soil

Type: Well-draining loamy to sandy soil
pH: 6.0-7.0
Amendments:
Compost or aged bark for drainage Perlite for container growing Avoid heavy clay or overly rich soil

Growing Zones

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Thrives as an annual in zones 3-10; perennial in zones 8-10

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 with 2-4 true leaves emerging; delicate and light-green.

Keep soil moist but not waterlogged. Provide bright light (grow lights helpful). Thin seedlings to prevent leggy growth. Maintain 65-70°F for best germination.

2

Vegetative Growth

2-4 weeks

Plant develops branching stems and increasingly dense foliage; stems become woody and compact.

Pinch growing tips once or twice when plant is 4-6 inches tall to encourage bushier growth. Water regularly but allow soil to dry between waterings. Gradually harden off transplants before planting outdoors.

3

Early Flowering

1-2 weeks

First flower clusters begin to form; tiny purple buds appear at stem tips.

Begin light fertilization with balanced or slightly phosphorus-rich fertilizer. Ensure full sun exposure. Water consistently at soil level. Early blooms may be sparse.

4

Abundant Flowering

8-12 weeks (spring to summer)

Dense clusters of plum-purple flowers cover the plant; mounding habit becomes very full and rounded.

Fertilize every 2-3 weeks with diluted liquid fertilizer (avoid excessive nitrogen). Deadheading not necessary but optional for neatness. Monitor for powdery mildew in humid conditions. Maintain consistent watering.

5

Late Season/Decline

6-8 weeks (late summer through fall)

Flowering continues but may slow in late summer heat; blooms resume when temperatures cool in fall.

Reduce fertilizer frequency. Improve air circulation to prevent disease. Cut back leggy growth if desired to rejuvenate. In frost-free zones, may transition to perennial growth.

Companion Planting

Plan your garden →

Plant with:

Salvia Calibrachoa Dusty Miller Petunias Marigolds Zinnias Ornamental Grasses Heliotrope

Avoid planting near:

Overly humid-loving shade plants Heavy feeders competing for nutrients in containers

Common Pests

  • Spray with water to dislodge; use neem oil or miticide if severe. Increase air circulation to prevent outbreaks.

  • Use yellow sticky traps to monitor. Spray with insecticidal soap or neem oil on undersides of leaves. Remove heavily infested leaves.

  • Improve air circulation and avoid wetting foliage. Apply sulfur or fungicide spray if present. Reduce watering frequency in humid conditions.

  • Remove affected leaves. Use spinosad-based insecticide if damage is widespread. Not usually a serious problem.

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

Uses

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Herbal Tea & Beverages

Culinary

While primarily ornamental, some verbena species have culinary uses. Lemon verbena (a different species) is commonly used in teas, but ornamental Superbena varieties are not typically consumed. Verify species before any culinary use. [source]

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Traditional Herbal Remedy

Medicinal

Historically, verbena genus plants have been used in traditional medicine for nerve health and relaxation, though scientific evidence is limited. Ornamental Superbena cultivars are not standard medicinal varieties; consult herbalists for proper species. [source]

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Dried Flower Arrangements

Craft

The plum-purple flower clusters dry well and can be used in dried flower arrangements, wreaths, and crafts. Hang bundles upside-down in a cool, dark place for 2-3 weeks until completely dry. [source]

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Container & Landscape Ornament

Household

Superbena Plum Purple is primarily valued as a flowering ornamental for hanging baskets, window boxes, containers, borders, and mass plantings. Its heat and drought tolerance make it ideal for low-maintenance gardens and waterwise landscapes. [source]

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Pollinator Attraction

Wildlife

The abundant small flowers attract butterflies, bees, and hoverflies, making it excellent for pollinator gardens. The continuous blooming provides nectar throughout the season. [source]

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

Harvest Tips

Verbena is a flowering ornamental, not typically harvested. However, flowers can be cut for fresh arrangements if desired (cutting actually encourages more blooms). Harvest flowers in the morning for longest vase life. Some gardeners dry flower clusters for crafts. Deadheading (removing spent flowers) is optional but can enhance appearance—Superbena varieties self-clean well.

Fun Facts

  • 🌱 The Superbena line was bred by Suntory Flowers specifically for improved vigor, disease resistance, and self-cleaning (blooming without deadheading), making it far superior to older verbena cultivars.
  • 🌱 Verbena flowers are composed of tiny individual blooms clustered together in dense heads called 'corymbs,' which appear as single blooms but are actually flower clusters.
  • 🌱 Superbena varieties can bloom continuously for 5-6 months in appropriate climates, making them among the longest-blooming annual flowers available.

Gardening Terms

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

Annual Cultivar Deadhead Full Sun Germination Perennial pH Transplant True Leaves
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