Common crops affected
Why it matters
It spreads fast in crowded canopies, cuts photosynthesis and yield, and downgrades fruit; in high-value crops it can be economically serious. Early and preventative action wins.
When to act
Protect from early flowering through fruiting during mild, humid spells.
What to look for
- Upward-curling leaves with purple blotches underneath
- White growth on leaf undersides, flowers and fruit
- Poor fruit finish and reduced shelf appeal
- Flower infection cutting set
How to manage it
- Open the canopy for airflow; avoid excess nitrogen.
- Remove affected leaves.
- Apply Mildew Control (1:2,000) at first sign and preventatively on susceptible crops.
Recommended Vegalab program
Mildew Control / Spore Control — adherent encapsulated cover for flowers and fruit.
| Role | Product | Use |
|---|---|---|
| Primary control | Mildew Control | Geraniol 17%; preventative + early curative |
| Broad-spectrum companion | Spore Control | Thymol broad-spectrum fungicide |
| Plant resilience | Armour Boost | Silica for resilient tissue |
Product claims, rates, and availability vary by jurisdiction; always follow the applicable label.