Mildew Control
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Mildew Control is an all-natural fungicide powered by geraniol (17%) that controls powdery mildew (Erysiphales) on grapes, apples, cucurbits, brambles and tomatoes. It disrupts fungal growth on contact, offering a low-residue alternative to synthetic mildew sprays.
All-natural mildew control — Preventative + curative, Non-toxic.
All-natural mildew control from Vegalab Crop Science, powered by Geraniol 17%. Mildew Control targets Powdery mildew — Erysiphales spp. on grapes, apples, cucurbits, brambles, tomatoes, and has been tested on Vines, Apples, Cucumbers, Brambles and Tomatoes.
Geraniol has a two-fold action: it retards spore germination and germ-tube growth, and destroys pathogen cells by inducing K⁺ ion imbalance in the mycelium. Most effective preventatively, but provides curative action on early-stage outbreaks.
| Active | Geraniol 17% |
|---|---|
| Targets | Powdery mildew — Erysiphales spp. on grapes, apples, cucurbits, brambles, tomatoes |
| Dilution rate | 1:2,000 · 0.5 mL/L (1.9 mL/gal) · 0.375–0.62 L/ha (5.1–8.5 fl oz/acre) |
| Application | Foliar spray at the start of disease onset |
| Line · Category | Control · All-natural mildew control |
- Powdery mildew on grapes (Erysiphe necator)
- Powdery mildew on cucurbits (Podosphaera fusca)
- Powdery mildew on apples (Podosphaera leucotricha)
- Powdery mildew on brambles, tomatoes, ornamentals
What is powdery mildew and why does it spread so fast?
Powdery mildew (the Erysiphales fungi) appears as a white, dusty coating on leaves, shoots and fruit. It thrives in warm days and cool, humid nights and spreads rapidly on air currents, sapping the plant's energy, reducing photosynthesis and downgrading fruit. Once established it is hard to reverse, so early, repeated control is key — especially on susceptible crops like grapes and cucurbits.
How does Mildew Control work?
The active is geraniol at 17%, a plant-derived terpene with antifungal activity. Applied to foliage, it disrupts powdery mildew on contact, helping stop the spread of established infections and protecting new growth. Because the active is nature-derived, it breaks down rather than persisting, which keeps residues low and supports use close to harvest where labels allow.
How and when should it be applied?
Apply as a foliar spray at the first sign of mildew, and preventively when warm-day, humid-night conditions favour infection. Repeat under continued pressure, ensuring thorough coverage of both leaf surfaces and the fruit zone. As with all contact fungicides, control depends on coverage — mildew on untreated tissue will keep spreading.
Which crops is it for?
Mildew Control has been tested on vines, apples, cucumbers, brambles and tomatoes — crops where powdery mildew is a recurring, quality-limiting disease. It is especially relevant for grapes and cucurbits, which face heavy mildew pressure through much of the season.
How does it fit a low-residue program?
Geraniol's nature-derived chemistry makes Mildew Control a good fit for programs reducing synthetic fungicide load and residues. Used as a protectant under building pressure and rotated with other modes of action, it helps manage mildew while supporting clean produce and resistance management — complemented by good airflow and canopy management.