How to Grow Trailing Scaevola Outback Purple

Wikimedia Commons

Trailing Scaevola Outback Purple

Scaevola aemula 'Outback Purple'

flower

Trailing Scaevola Outback Purple is a cascading annual flower prized for its vibrant purple fan-shaped blooms and vigorous trailing habit. It produces abundant flowers throughout the growing season and is ideal for hanging baskets, containers, and window boxes. This cultivar is heat and drought-tolerant once established, making it a reliable choice for sunny garden displays.

When should you plant Trailing Scaevola Outback Purple in your zone?

Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.

Get my Trailing Scaevola Outback Purple timeline →

Example Trailing Scaevola Outback Purple timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Trailing Scaevola Outback Purple

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Trailing Scaevola Outback Purple blooms

    Around May 17

    ≈ 30 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Trailing Scaevola Outback Purple dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily; tolerates partial shade but flowers more abundantly in full sun
💧
Water: Keep soil consistently moist but not waterlogged; water when the top inch of soil is dry. In hot weather, may require daily watering in containers. Once established in garden soil, drought-tolerant.
📏
Spacing: 12-18 inches
📅
Days to maturity: 30-45 days to first flowers; continuous blooming thereafter
🌱
Planting depth: Transplants should be planted at the same depth as the nursery pot; sow seeds on soil surface as they need light to germinate

Soil

Type: Well-draining potting soil or light loamy soil
pH: 6.0-7.0
Amendments:
Peat moss or coco coir Perlite or coarse sand Compost for container growing

Growing Zones

Find your zone →

Thrives in zones 5-10; grown as an annual in cooler zones 3-4

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

Sign up free to see if Trailing Scaevola Outback Purple grows in your zone — and get a personalized planting timeline.

Get my Trailing Scaevola Outback Purple timeline →

Growth Stages

1

Seedling

2-3 weeks

Tiny seedlings emerge with simple leaves; very small and delicate

Keep soil moist but not soggy; provide bright, indirect light; avoid damping off by ensuring good air circulation

2

Transplant

2-4 weeks

Young plants develop 2-4 sets of true leaves and establish shallow root systems

Pot up into slightly larger containers; harden off before planting outdoors; fertilize lightly with balanced fertilizer

3

Establishment

3-4 weeks

Plants begin to spread and branch; stems lengthen and fill out the container or planting area

Pinch back growing tips to encourage bushier growth; water regularly; apply balanced slow-release fertilizer

4

Flowering

8-12+ weeks (throughout growing season)

Abundant purple fan-shaped flowers appear along trailing stems; continuous bloom production

Deadhead spent flowers regularly to encourage more blooms; maintain consistent moisture and nutrition; watch for pests

5

Decline

Variable, depending on season

In fall or with frost, flowering slows and foliage may yellow; plants decline as temperatures drop

Remove plants after frost in cool zones; can be overwintered indoors in a cool, bright location in zones 9-10

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

Plants requiring dry conditions (sedums, echeveria) Plants sensitive to frequent fertilizing

Common Pests

  • Spray with water to dislodge; use neem oil or insecticidal soap; increase humidity; remove heavily infested leaves

  • Use yellow sticky traps; spray with insecticidal soap or neem oil; encourage beneficial insects

  • Remove by hand with alcohol-soaked cotton swab; spray with insecticidal soap; isolate infested plants

  • Spray with water or insecticidal soap; use neem oil; introduce ladybugs

Uses

🍳

Ornamental edible flowers

Culinary

While primarily ornamental, Scaevola flowers are edible and can garnish salads or desserts, adding a mild flavor and attractive purple color to dishes. [source]

🏠

Container and hanging basket displays

Household

Trailing Scaevola Outback Purple is a premium choice for hanging baskets, window boxes, mixed containers, and cascading displays, providing color all season long with minimal maintenance. [source]

🏠

Landscape color and erosion control

Household

Used in garden beds, borders, and slopes to provide ground cover, fill gaps between plantings, and stabilize soil with its dense trailing habit and spreading growth. [source]

🦋

Pollinator attraction

Wildlife

The abundant purple flowers attract bees, butterflies, and other pollinators, making it a valuable addition to wildlife gardens and beneficial insect habitats. [source]

🎨

Cut flowers and floral arrangements

Craft

The trailing stems and colorful blooms can be used in fresh floral arrangements, providing a delicate, cascading element to bouquets and decorative displays. [source]

Harvest Tips

Deadhead spent flowers regularly to maintain a neat appearance and encourage continuous blooming. Pinch back excessively long stems to control shape. No harvest needed for ornamental purposes, but you can cut stems for fresh arrangements.

Fun Facts

  • 🌱 Scaevola is named from the Latin word 'scaeva,' meaning 'left-handed,' due to the asymmetrical, fan-shaped flowers that appear to only have petals on one side.
  • 🌱 Trailing Scaevola Outback Purple is native to Australia and thrives in hot, sunny conditions, making it particularly well-suited to heat waves and challenging summer gardens.
  • 🌱 This cultivar can produce hundreds of flowers over a single growing season, with new blooms continuously replacing old ones if properly maintained and deadheaded.

Gardening Terms

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

Join 30,000 gardeners planning their gardens with LizPlants.

Get your personalized Trailing Scaevola Outback Purple planting timeline

Tell us your zip code and we'll calculate exactly when to start Trailing Scaevola Outback Purple seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.

Get my Trailing Scaevola Outback Purple timeline →