How to Grow Scaevola
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Scaevola
Scaevola aemula
flowerScaevola is a tender perennial flowering plant known for its delicate, fan-shaped blue, purple, pink, or white flowers that bloom prolifically throughout the growing season. Native to Australia, it's prized as a ornamental groundcover and container plant that thrives in warm climates and adapts well to hanging baskets and mixed borders.
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Example Scaevola timeline · Pittsburgh, PA (Zone 6b)
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Plant Scaevola
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Scaevola blooms
Around May 17≈ 30 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 10-11; grown as an annual in cooler zones
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Seedling
3-4 weeksTiny seedlings emerge with delicate cotyledons; very slow-growing initially
Maintain high humidity and consistent moisture; provide bright indirect light; thin seedlings if overcrowded; transplant to individual pots at 2-3 true leaf stage
Vegetative Growth
4-6 weeksYoung plant develops trailing or mounding habit with increasingly dense foliage; bushy appearance fills in
Pinch back growing tips when 3-4 inches tall to encourage branching; maintain consistent moisture; fertilize every 2 weeks with balanced fertilizer; ensure good drainage
Flowering
8-12 weeks or moreFan-shaped flowers emerge along stems in clusters; colors include blue, purple, pink, or white with lighter centers; profuse blooming occurs
Deadhead spent flowers to encourage continuous blooming; maintain regular watering and feeding; reduce nitrogen to avoid excessive foliage at expense of flowers; provide full sun for maximum flower production
Peak Bloom & Maturity
Continues throughout warm seasonPlant is fully developed with abundant trailing or mounding growth covered in flowers; flowers bloom continuously in warm weather
Continue deadheading; fertilize weekly with dilute balanced or slightly lower-nitrogen fertilizer; adjust watering based on rainfall and heat; pinch back any overly long stems to maintain shape
Winter Dormancy (Zones 10-11)
2-4 months or overwinter indoorsPlant may slow growth or go dormant in cooler months; flowering may diminish or stop entirely
Reduce watering significantly; apply minimal fertilizer; protect from frost if temperatures drop below 50°F; cut back in spring to promote fresh growth; treat as annual and replant in cooler zones
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use insecticidal soap or miticide if severe; increase humidity to discourage mites
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Yellow sticky traps to monitor and control; spray with insecticidal soap or horticultural oil; ensure good air circulation
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Allow soil surface to dry between waterings; use sand topdressing; apply gnat control products if needed
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Spray with insecticidal soap; remove heavily infested stems; isolate affected plants
Uses
Edible Flowers
CulinaryScaevola flowers are edible with a slightly sweet taste and are used as garnishes in salads, desserts, and beverages. They add delicate color and visual appeal to culinary presentations. [source]
Container Gardening & Hanging Baskets
HouseholdScaevola's trailing habit makes it ideal for hanging baskets, containers, and mixed patio displays. Its prolific flowering and low maintenance make it a popular choice for summer garden decorations. [source]
Pollinator Attraction
WildlifeThe abundant flowers attract bees, butterflies, and other beneficial pollinators to the garden. Scaevola provides nectar-rich blooms throughout the growing season. [source]
Cut Flower Arrangements
CraftDelicate scaevola sprigs can be used in fresh flower arrangements and floral designs. The flowers remain fresh for several days when properly conditioned. [source]
Harvest Tips
Scaevola is not harvested for food; deadhead spent flowers regularly to promote continuous blooming throughout the season. Pinch back stems as needed to maintain desired shape and density.
Fun Facts
- 🌱 Scaevola comes from the Latin word 'scaeva' meaning 'left-handed,' referring to the asymmetrical fan-shaped flowers that appear to favor one side.
- 🌱 The plant is native to Australia and other tropical regions, which explains its preference for warm weather and intolerance of cold temperatures below 50°F.
- 🌱 Scaevola flowers are pollinated by native Australian birds and insects in their natural habitat, making them a valuable nectar source in tropical gardens.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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