Common crops affected
Why it matters
It spreads extremely fast and rots fruit and tubers, so prevention and rapid response are critical — once widespread it's very hard to stop.
When to act
Protect preventively ahead of cool, wet forecasts; don’t wait for symptoms.
What to look for
- Greasy gray-green blotches on leaves
- White sporulation at lesion edges in humidity
- Brown, firm fruit rot
- Rapid whole-plant collapse in wet spells
How to manage it
- Maximise airflow; avoid leaf wetness; never work wet plants.
- Remove infected plants immediately.
- Apply Spore Control (1:1,000) ahead of and during cool, wet weather.
Recommended Vegalab program
Spore Control — adherent encapsulated cover for rainfast protection; rotate actives.
| Role | Product | Use |
|---|---|---|
| Primary control | Spore Control | Lists phytophthora as a target; apply preventatively |
| Plant resilience | Armour Boost | Resilient tissue |
Product claims, rates, and availability vary by jurisdiction; always follow the applicable label.