← Plant Guides

How to Grow Purple Fan Flower

Wikimedia Commons

Purple Fan Flower

Scaevola aemula

flower

Purple Fan Flower is a tender perennial trailing plant known for its distinctive fan-shaped purple, blue, or lavender flowers that bloom prolifically throughout warm seasons. It's a popular choice for hanging baskets, containers, and ground cover in warm climates due to its long blooming period and low maintenance requirements. The plant features soft, slightly hairy foliage and produces flowers with an appealing spread that resembles a delicate fan.

When should you plant Purple Fan Flower 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 Purple Fan Flower timeline →

Example Purple Fan Flower timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Purple Fan Flower

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Purple Fan Flower blooms

    Around May 17

    ≈ 30 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Purple Fan Flower dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun to partial shade, 6+ hours of direct sunlight daily (performs best in full sun)
💧
Water: Keep soil consistently moist but not waterlogged; water deeply when top inch of soil is dry. More frequent watering needed in containers and hot weather. Drought-tolerant once established but blooms best with regular moisture.
📏
Spacing: 12-18 inches
📅
Days to maturity: 30-45 days to first flowers from transplants
🌱
Planting depth: Plant at same depth as nursery container; very fine seeds should be surface-sown and barely pressed into soil

Soil

Type: Well-draining potting soil or sandy loam
pH: 6.0-7.0
Amendments:
Perlite or sand for improved drainage Compost for organic matter Peat moss or coconut coir

Growing Zones

Find your zone →

Zones 10-11; grown as an annual in cooler zones

10a 10b 11a 11b

Sign up free to see if Purple Fan Flower grows in your zone — and get a personalized planting timeline.

Get my Purple Fan Flower timeline →

Growth Stages

1

Seedling

3-4 weeks

Tiny seedlings with first true leaves emerging, very delicate and slow-growing initially

Keep under grow lights or in bright, indirect light. Maintain consistent moisture without waterlogging. Bottom heat (70-75°F) accelerates germination.

2

Vegetative Growth

3-5 weeks

Plant develops more foliage and becomes bushier; soft, hairy stems elongate and spread

Pinch back growing tips to encourage branching and fuller shape. Provide full sun. Fertilize every 2-3 weeks with balanced fertilizer.

3

Flowering

12-16 weeks (or entire growing season)

Fan-shaped flowers in purple, blue, or lavender appear along stems and at branch tips; continuous blooming

Deadhead spent flowers to encourage more blooms, though plant is very self-cleaning. Maintain consistent watering and weekly fertilizing with lower nitrogen formula.

4

Mature Production

8+ weeks

Plant reaches full size with abundant trailing stems covered in flowers; may appear slightly woody at base

Continue deadheading and fertilizing. Cut back leggy growth to promote bushiness. Reduce watering slightly in containers as plant fills pot.

5

Decline/Dormancy

Variable with climate

Plant slows flowering and growth as temperatures cool or with short day length; foliage may yellow

In zones 10-11, move container indoors or provide frost protection. In cooler zones, treat as annual and compost spent plant. Prune back if overwintering.

Companion Planting

Plan your garden →

Plant with:

Calibrachoa Verbena Trailing petunias Ivy geranium Sweet potato vine Licorice plant Bacopa Lobelia

Avoid planting near:

Plants requiring consistently dry soil Heavy feeders competing for nutrients in small containers

Common Pests

  • Spray with insecticidal soap or neem oil weekly; encourage beneficial insects; yellow sticky traps

  • Increase humidity; spray with water; use miticide if severe; neem oil is effective

  • Remove with cotton swab dipped in rubbing alcohol; spray with insecticidal soap; isolate affected plants

  • Improve air circulation; avoid wetting foliage; spray with sulfur fungicide or baking soda solution (1 tbsp per gallon water)

Uses

🍳

Not for consumption

Culinary

Purple Fan Flower is not edible and should not be consumed. It is purely ornamental. [source]

🏠

Container and hanging basket display

Household

Ideal for decorating patios, balconies, windowsills, and garden beds with hanging baskets, window boxes, and mixed containers. The cascading growth habit creates attractive trailing displays. [source]

🎨

Fresh cut flower arrangements

Craft

Delicate fan-shaped flowers can be used in small fresh arrangements or as filler. Cut stems last several days in water and add a whimsical texture to bouquets. [source]

🦋

Pollinator attraction

Wildlife

Prolific blooms attract bees, butterflies, and other pollinators, supporting local ecosystems and beneficial garden insects throughout the warm season. [source]

Harvest Tips

Purple Fan Flower is not harvested for yield but rather enjoyed for continuous blooms. Deadhead spent flowers regularly to extend blooming period—pinch off faded fan flowers at their base. The entire plant can be cut back by one-third in mid-season if it becomes leggy, which stimulates new branching and rejuvenates flowering.

Fun Facts

  • 🌱 The name 'fan flower' comes from the distinctive shape of the five petals, which spread open like a tiny fan; the flowers are asymmetrical with three larger lower petals and two smaller upper petals.
  • 🌱 Purple Fan Flower is native to Australia and is sometimes called Australian Fan Flower; it's extremely heat and humidity tolerant, making it perfect for hot, coastal, or tropical gardens.
  • 🌱 This plant is nearly self-cleaning, meaning it drops spent flowers automatically without deadheading, though removing flowers encourages even more blooms and looks neater.

Gardening Terms

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

Annual Compost Deadhead Full Sun Germination Partial Shade Perennial Pinch Back True Leaves
Shop Purple Fan Flower plants and related plants at Plant Addicts →

Join 30,000 gardeners planning their gardens with LizPlants.

Get your personalized Purple Fan Flower planting timeline

Tell us your zip code and we'll calculate exactly when to start Purple Fan Flower 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 Purple Fan Flower timeline →