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How to Grow Scaevola

Scaevola aemula

Tender Warm Season Continuous Harvest

Scaevola is a trailing tender annual with fan-shaped purple-blue flowers produced continuously from early summer until frost. Ideal for hanging baskets, window boxes, and spilling over container edges. Grow in full sun with regular watering and weekly feeding. Self-cleaning flowers need no deadheading. Pinch tips when young for bushier growth. Cannot tolerate frost; discard after the first freeze.

When to Start

Start seeds indoors 6 weeks before your last frost date. Transplant outdoors once night temperatures stay above 10°C and soil has warmed to at least 15°C.

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Growth Stages

Sow seeds
Day 0
Germination
~14 days
Flowering
~63 days
Seed to harvest
~63 days

Approximate days from start

Care Essentials

  • Feed weekly with a balanced liquid fertiliser throughout the growing season. Heavy feeder that performs best with regular nutrition.
  • Trailing Australian native grown as a summer annual in Europe. Ideal for hanging baskets, window boxes, and container edges. Self-cleaning flowers that do not require deadheading. Pinch tips early to encourage bushier growth.

Growing Conditions

Min. soil temperature
15°C+
Germination temperature
20–25°C

Enter your last frost date to see your dates

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Spacing & Planting

Plant spacing 30 cm
Row spacing 35 cm
Sow depth 0.3 cm
Mature height 25 cm
Mature spread 50 cm

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Growing Conditions

Min. soil temperature15°C
Germination temperature20–25°C
Base growth temperature10°C
Min. daylength to start12h
Photoperiod sensitivityday neutral

Frequently Asked Questions

How far apart should I plant Scaevola?
Plant Scaevola 30cm apart with 35cm between rows.
When does Scaevola flower?
Scaevola typically flowers approximately 50 days after transplanting.
Is Scaevola frost hardy?
Scaevola is classified as Tender.

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