Downy Mildew

Downy mildew refers to any of several types of oomycete microbes that are obligate parasites of plants. Downy mildews exclusively belong to Peronosporaceae. In commercial agriculture, they are a particular problem for growers of crucifers, grapes and vegetables that grow on vines.

Powdery Mildew

Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of fungi in the order Erysiphales, with Podosphaera xanthii (a.k.a. Sphaerotheca fuliginea) being the most commonly reported cause.

Oil Spots

Downy mildew produces golden-yellow, oily spots on leaves, which are best seen on the top side of the leaves. When young (less than say 4–5 days old), the spots are often surrounded by a chocolate halo, which fades as the oilspot ages.

Bunch Rot

Botrytis bunch rot is another condition of grapes caused by Botrytis cinerea that causes great losses for the wine industry. It is always present on the fruitset, however, it requires a wound to start a bunch rot infection.


GrapeWatch provides up to the minute advice on the likelihood of disease in your area. This is an essential tool to aid in spraying for these diseases.

Time Critical Advice

Disease advice updated hourly for all weather stations through the Riverland and surrounding areas.

Designed By Experts

Disease modelling designed by leading experts in the field with 40 years experience.

Over 100 Weather Stations

A large number of weather stations supported with many more to be added.

Manage Your Sites

Supports multiple vineyards in different geographical locations.

Spray Diary

Keep track of your disease spraying and monitor your protection against infection.

Google Maps Integration

View your sites, weather stations and disease location on google maps view.

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The app is free to download from the following stores. NOTE: August 2020 App is in beta testing so will likely have some issues. Please contact us to report any problems you have.

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