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.
In your Leaftide garden - Hardiness
- Tender
- Season
- Warm Season
- Harvest
- Continuous Harvest
- Spacing
- 30 cm
- Height
- 25 cm
- Sow depth
- 0.3 cm
- Min. soil temperature
- 15°C+
- Start from
- Seed
- Light
- Full sun
- Water
- Moderate
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.
Don't know your frost date? Find it here →
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
Don't know your frost date? Find it here
- Sow indoors
- —
- Transplant out
- —
- First harvest
- —
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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 |
Growing Conditions
| Min. soil temperature | 15°C |
| Germination temperature | 20–25°C |
| Base growth temperature | 10°C |
| Min. daylength to start | 12h |
| Photoperiod sensitivity | day 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.