How to Grow Salsify
Tragopogon porrifolius
When to Start
Direct sow outdoors as soon as soil reaches 7°C — typically early to mid spring. Hardy enough to tolerate light frosts.
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Growth Stages
Approximate days from start
Care Essentials
- Light balanced feed at sowing. Avoid fresh manure — causes forking.
- Known as the 'oyster plant' for its subtle flavour. Slow-growing — sow early. The purple flowers are also edible.
Companion Planting
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Growing Conditions
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- Direct sow
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Spacing & Planting
| Plant spacing | 15 cm |
| Row spacing | 40 cm |
| Sow depth | 1 cm |
| Mature height | 80 cm |
| Mature spread | 20 cm |
Requires deep, loose soil and consistent spacing for long, straight root development.
Care Guide
- Feeding
- Light balanced feed at sowing. Avoid fresh manure — causes forking.
- Watch for
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- White blister
- Aphids
- Generally trouble-free
Pests & Diseases
Pest Aphids
Identification: Clusters of green or black insects on leaves and stems; sticky honeydew; distorted growth on young plants
- Blast off with a jet of water
- Spray with insecticidal soap
- Encourage natural predators such as ladybirds and hoverflies
- Spray with a contact insecticide containing pyrethrins if infestations are severe
Pest Slugs and Snails
Identification: Seedlings eaten at ground level; ragged holes in young leaves; slime trails on soil
- Apply organic slug pellets (ferric phosphate based) around seedlings
- Hand-pick at dusk; use beer traps
- Keep the area around plants clear of debris where slugs shelter
- Apply ferric phosphate slug pellets around vulnerable seedlings
Disease White Blister Albugo tragopogonis
Symptoms: Raised white pustules on leaf undersides; corresponding yellow patches on upper surfaces; distorted growth in severe cases
Treatment: Remove and destroy affected leaves; improve air circulation
Prevention: Avoid overcrowding; ensure good airflow; rotate crops; remove plant debris at end of season
Disease Powdery Mildew Erysiphe spp.
Symptoms: White, powdery coating on leaves; affected leaves yellow and die back; reduced vigour
Treatment: Remove badly affected leaves; spray with a sulphur-based fungicide or potassium bicarbonate solution
Prevention: Space plants for good airflow; water at the base; avoid overhead watering
Growing Conditions
| Min. soil temperature | 7°C |
| Germination temperature | 10–18°C |
| Base growth temperature | 3°C |
| Min. daylength to start | 9h |
| Photoperiod sensitivity | day neutral |
Frequently Asked Questions
- How far apart should I plant Salsify?
- Plant Salsify 15cm apart with 40cm between rows.
- Is Salsify frost hardy?
- Salsify is classified as Hardy.
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