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How to Grow Scaevola Bombay Blue

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Scaevola Bombay Blue

Scaevola aemula 'Bombay Blue'

flower

Bombay Blue is a trailing annual flower cultivar known for its vibrant blue fan-shaped flowers and cascading growth habit. It blooms prolifically throughout warm seasons and is ideal for hanging baskets, containers, and ground cover applications. The plant is low-maintenance and tolerant of various growing conditions.

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Example Scaevola Bombay Blue timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Scaevola Bombay Blue

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Scaevola Bombay Blue blooms

    Around May 17

    ≈ 30 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Scaevola Bombay Blue dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun to part shade, 6+ hours of sunlight daily
💧
Water: Moderate water needs; keep soil consistently moist but not waterlogged. Reduce watering in cooler months. Drought-tolerant once established.
📏
Spacing: 12 inches
📅
Days to maturity: 30-45 days to first flowers
🌱
Planting depth: Surface sown or 1/4 inch deep for seeds; transplants at soil level

Soil

Type: Well-draining loamy to sandy soil
pH: 6.0-7.0
Amendments:
Compost Peat moss or coconut coir Perlite for drainage

Growing Zones

Find your zone →

Thrives in zones 10-11; grown as an annual in cooler climates

10a 10b 11a 11b

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Growth Stages

1

Seedling

2-3 weeks

Tiny leaves emerge and plants develop a low rosette form with minimal branching

Keep soil moist; provide bright indirect light; avoid overwatering to prevent damping off

2

Vegetative Growth

2-4 weeks

Plants develop multiple trailing stems with small green leaves; no flowers yet

Begin light feeding with balanced fertilizer every 2-3 weeks; pinch tips to encourage branching

3

Flowering Onset

1-2 weeks

First small blue fan-shaped flowers appear at stem tips; plant becomes bushier

Switch to higher phosphorus fertilizer to promote flowering; ensure adequate sunlight

4

Peak Bloom

6-12 weeks or until frost

Abundant blue flowers cover the plant; dense trailing habit is fully developed

Deadhead spent flowers to encourage continuous blooming; maintain consistent moisture; fertilize every 2-3 weeks

5

Decline (Cold Season)

Variable

Growth slows significantly in cool weather; flowering diminishes; plant may become sparse

Reduce watering and feeding; in zones below 10, treat as annual and replant next season

Companion Planting

Plan your garden →

Plant with:

Calibrachoa Petunia Bacopa Sanvitalia Verbena Diascia

Avoid planting near:

Heavy feeders like tomatoes Plants requiring dry conditions

Common Pests

  • Spray with insecticidal soap or neem oil; increase air circulation; use yellow sticky traps for monitoring

  • Mist foliage regularly; spray with neem oil or insecticidal soap; ensure humidity above 50%

  • Remove with rubbing alcohol on cotton swabs; spray with insecticidal soap; isolate affected plants

  • Spray with water to dislodge; use insecticidal soap or neem oil; introduce beneficial insects like ladybugs

Uses

🍳

Edible Flowers

Culinary

The delicate blue flowers are edible and can be used as garnish for salads and desserts, adding a subtle floral note and visual appeal to dishes. [source]

🎨

Container & Hanging Basket Design

Craft

The cascading trailing habit makes Bombay Blue ideal for hanging baskets, window boxes, and mixed containers, creating elegant vertical gardens and arrangements. [source]

🦋

Pollinator Attraction

Wildlife

The prolific blue flowers attract bees, butterflies, and other pollinators, supporting local ecosystems and enhancing garden biodiversity. [source]

🏠

Low-Maintenance Ornamental

Household

Scaevola Bombay Blue is heat and drought-tolerant once established, making it an excellent choice for low-maintenance gardens and water-wise landscapes. [source]

Harvest Tips

Scaevola is ornamental; pinch off spent flowers regularly to encourage continuous blooming throughout the season. Trim stems as needed to maintain desired shape and density. For propagation, take 2-3 inch stem cuttings in spring and root in moist potting soil.

Fun Facts

  • 🌱 Scaevola flowers are fan-shaped due to a unique asymmetrical corolla, with petals fused on one side and splayed on the other, giving them the distinctive appearance that makes them instantly recognizable.
  • 🌱 The name 'Scaevola' comes from the Latin word meaning 'left-handed,' referencing the lopsided flower structure.
  • 🌱 Bombay Blue is highly adaptable to container growing and can be propagated easily from cuttings, making it a favorite among gardeners for creating new plants throughout the season.

Gardening Terms

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

Annual Cultivar Damping Off Deadhead Full Sun pH
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