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How to Grow Petunia Multiflora Picobella

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Petunia Multiflora Picobella

Petunia × hybrida 'Picobella'

flower

Picobella is a compact, dwarf petunia variety belonging to the multiflora class, known for producing abundant small flowers on a dense, mounding plant. It reaches only 6-10 inches tall and spreads 12-15 inches wide, making it ideal for containers, edging, and hanging baskets. The prolific blooming continues throughout the season with minimal deadheading required.

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Example Petunia Multiflora Picobella timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Petunia Multiflora Picobella

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Petunia Multiflora Picobella blooms

    Around Jun 6

    ≈ 50 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Petunia Multiflora Picobella dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily (tolerates partial shade but flowers less prolifically)
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Water: Keep soil consistently moist but not waterlogged. Water deeply when top inch of soil is dry. Container plants may need daily watering in hot weather. Reduce watering slightly in cooler periods.
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Spacing: 12-15 inches
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Days to maturity: 50-70 days from transplant to first significant blooms
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Planting depth: Sow seeds on soil surface (light germinators); do not cover. Transplants should be planted at soil level.

Soil

Type: Well-draining loamy or sandy soil
pH: 6.0-6.8
Amendments:
Compost or aged bark mulch Peat moss for container mixes Perlite or sand for drainage enhancement

Growing Zones

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Annual in zones 2-10; thrives in warm-season gardens nationwide

2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a

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Growth Stages

1

Seedling

2-3 weeks

Tiny seedlings emerge with cotyledons visible. True leaves appear within 7-10 days.

Maintain high humidity and 70-75°F. Provide bright light immediately after germination. Do not cover seeds; keep soil moist with misting.

2

Vegetative

3-4 weeks

Plant develops its compact mounding form with multiple leaf nodes. Stems branch naturally into dense foliage.

Thin seedlings once true leaves appear. Fertilize weekly with balanced fertilizer (1-1-1). Pinch back growing tips at 6 weeks to encourage bushiness.

3

Pre-flowering

2-3 weeks

Plant reaches maximum vegetative size with flower buds visible at branch tips.

Switch to bloom-promoting fertilizer with higher phosphorus (5-10-5 or similar). Continue consistent watering. Ensure full sun exposure.

4

Flowering

8-12 weeks until frost

Abundant small flowers (typically 1.5-2 inches) cover the plant in continuous blooms. Colors include red, pink, purple, white, and bicolors.

Deadhead spent flowers to extend blooming (though multiflora types are self-cleaning). Water and fertilize regularly every 7-10 days. Remove any diseased foliage.

5

Senescence/Frost Kill

Variable depending on location; typically late fall

Plant growth slows as temperatures drop below 50°F. Flowers become sparse and foliage may discolor.

Stop fertilizing. Reduce watering as plant enters dormancy. Harvest seeds if desired before first frost. Pull plant when killed by frost (typically at 32°F).

Companion Planting

Plan your garden →

Plant with:

Sweet alyssum Dusty miller Calibrachoa Bacopa Verbena Marigold Sunflower Zinnia

Avoid planting near:

Black walnut (walnut toxicity) Plants requiring dry conditions (petunias need consistent moisture)

Common Pests

  • Spray with insecticidal soap or neem oil weekly. Introduce yellow sticky traps. Avoid excessive nitrogen fertilization.

  • Increase humidity by misting. Spray with water to dislodge. Use miticide if severe. Improve air circulation.

  • Spray with water or insecticidal soap. Use neem oil every 7 days. Encourage beneficial insects like ladybugs.

  • and

    Remove by hand, especially at night. Use copper tape around containers. Apply diatomaceous earth around base.

  • No cure; remove infected plants immediately. Control aphid vectors with insecticidal soap. Choose resistant varieties when available.

Uses

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Container gardening and landscaping

Household

Picobella petunias are exceptionally versatile for hanging baskets, window boxes, pots, garden beds, and border edging. Their compact, mounding habit and prolific blooms make them ideal for creating colorful annual displays. [source]

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Cut flowers and floral arrangements

Craft

Fresh petunia flowers can be cut and placed in water for short-term fresh arrangements. The blooms last several days in a vase and add color and texture to mixed bouquets. [source]

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Pollinator attraction

Wildlife

Petunias produce nectar that attracts bees, butterflies, and hummingbirds, supporting pollinators throughout the season. Dense clusters of flowers provide abundant feeding opportunities. [source]

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Traditional herbal use

Medicinal

Petunias have mild diuretic and laxative properties and were historically used in folk medicine preparations, though modern medicinal use is limited and not officially recognized. [source]

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Color mass plantings for visual impact

Household

Picobella's dense, uniform growth habit makes it perfect for creating bold sweeps of color in gardens, with multiple plants producing a cohesive, professional appearance. [source]

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

Harvest Tips

Petunias are ornamental and not typically harvested for consumption, but flowers can be cut for fresh arrangements when fully open. Pinch or deadhead regularly (though 'Picobella' is largely self-cleaning) to encourage continuous bloom through the season. To collect seeds, allow a few flowers to fade and mature; seed pods will dry on the plant. Harvest mature seed pods before frost and store in cool, dry conditions.

Fun Facts

  • 🌱 The name 'Petunia' comes from the Tupi (South American indigenous language) word 'petun,' which originally referred to tobacco plants, though petunias and tobacco are different genera.
  • 🌱 Picobella is a genetically improved multiflora hybrid bred for compact size, disease resistance, and floriferous habit—a significant advancement over older petunia cultivars.
  • 🌱 Petunia flowers contain volatile compounds including linalool and geraniol, which create their subtle fragrance and may have mild insect-repellent properties.

Gardening Terms

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

Deadhead Full Sun Germination Partial Shade pH Pinch Back True Leaves
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