Spray the whole plant evenly until just before run-off (before drips start to form at the tips of leaves).

Powdery mildew fungi produce microscopic air-borne dispersal spores from the fungal growth on the plant surface. These have an unusually high water content, enabling them to infect under drier conditions than most other fungal pathogens. The majority of the growth of most powdery mildews is found on the plant surface. The fungus sends feeding structures into the surface cells, greatly reducing the vigour of the plant. Because of this surface growth, powdery mildews are even more influenced by the environment than other plant diseases. Choosing the right plant for the right place, along with some simple measures to adjust the environment can go a long way to minimising powdery mildew issues in gardens. Fungicides are made of a mixture of ingredients, in which case active ingredients are sourced from different fungicide classes. For instance, you can have ingredients from the Triazole fungicide class that function to inhibit enzymes crucial in fungi sterol-production; combined with those from the strobilurin class that are locally systematic and hurts fungal respiration. Pour liquid from the dosing chamber into the sprayer and make up to 1 litre with water. This will treat a lawn area of up to 20m²Don’t plant too densely, giving space between plants. Aim for an open environment to increase air circulation and reduce humidity Ornamentals:The fungicides sulphur (Fungus Clear Ultra 2, Mildew Clear for Edibles), tebuconazole (Provanto Fungus Fighter Concentrate), tebuconazole with trifloxystrobin (Provanto Fungus Fighter Plus, Toprose Fungus Control & Protect), and triticonazole (Fungus Clear Ultra) are approved for the control of powdery mildewson ornamental plants. Prune shrubs to give an open structure (which will again improve air circulation and reduce humidity) However, when dealing with the need to stop or slow down a fungal infection; you’re better off settling for a fungicide with more curative properties regardless of its protection period. That’s following the short application interval that overrides the need for long-term protection.

Consider applying a fungicide (see below)before cutting and again after two weeks. Reduction can be less severe if you intend to use fungicides Yes, there are limitless fungicides available on the market today. Unfortunately, the chasm between the performance of established brands and conventional sprays has no Venn diagram with a bit of an overlap. Therefore, forget the price and brand, and instead, focus on crucial information and features, as outlined below. Ingredients

Then rinse sprayer thoroughly after use and dispose of washings safely by pouring onto bare soil. Once the bottle is empty, RINSE CONTAINER THOROUGHLY before disposal by manually rinsing three times. This can be done by filling the dosing chamber with clean water, replacing the cap and tipping the water into the bottle. Repeat steps 1 – 4 above to add washings to sprayer at time of filling and dispose of empty container safely. We independently research, review, and recommend the best products. If you buy something through our links, we may earn a commission. Learn more. This refers to the duration the fungicide is effective. Some offer a short protection period (weeks) while others provide a longer period of control (over 3 months). Therefore, select what best suits your circumstances. Consider whether the design of the garden is optimal. Alternative plants may be preferable in high risk areas Avoid planting box in the same place for several years (spores can remain viable on fallen leaf litter for at least 6 years)