Growing Success 20300573 Natural Power Disease & Fungus 800ml RTU, GREEN

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The leaf spot pathogens Stigmina and Eupropolella cause brown spots on the leaves. The centres of the spots may eventually fall out, leaving irregular holes in the leaves that resemble damage from shotgun pellets – hence 'shot-hole'. Spots caused by Eupropolella are larger than those of Stigminaand sometimes havefungal fruiting bodies visible, and can lead to large parts of the leaf being shed Distorted leaves are often the first sign of infection, especially with the larger-leaved cultivars. A grey/mauve felt-like 'fungal' growth appears on the under-surface of the leaves, with diffuse purple-red or yellow patches developing on the corresponding upper surface.

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. Do not over-fertilise (especially not too much nitrogen) as succulent growth is particularly susceptible Like that of most powdery mildews, the majority of the growth of rose powdery mildew is on the surface of the plant. This exposed growth makes it susceptible to a range of chemical control measures.

Provide good drainage, but water regularly during dry periods (plants suffering from regular but intermittent drought-stress are more susceptible). Application of mulch may help water retention Clean up and destroy fallen leaves to reduce the amount of the downy mildew pathogen surviving the winter The RHS believes that avoiding pests, diseases and weeds by good practice in cultivation methods, cultivar selection, garden hygiene and encouraging or introducing natural enemies, should be the first line of control. If chemical controls are used, they should be used only in a minimal and highly targeted manner. Non-chemical control: 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 labelled for the control ofrose powdery mildew. Fungicides are likely to need several applications during the growing season, particularly in still, humid weather. Sprays in late summer and early autumn may help to reduce the number of infected buds in which the fungus can overwinter.

Growing Success Fungus Stop is a pesticide-free alternative to help prevent disease on fruits, vegetables and flowers as well as ornamental plants. Its formulation contains natural ingredients and will not harm beneficial insects such as bees and ladybirds. It works by promoting a plant reaction to defend itself against a wide range of pests such as Powdery Mildew, Fruit Scab, Rust, Leaf Spot and more. Ensure that any leaves falling prematurely from an infected plant are collected up and disposed of (by burning, burial or consigning to the council green waste). Heavily-infected shoots could be trimmed off and disposed of in the same way.We know how important your garden is to you. We've listened to our customers and introduced a new improved speedy delivery service, meaning Express deliverycomes as standard. 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. Downy mildewrequires cool wet weather for infection and spread. The 'fungal' growth seen on the underside of the leaves produces large numbers of asexual spores.Downy mildews are host-specific, so for example thedowny mildew affecting a Veronica will not infect a rose or vice versa.

Destroying fallen infected leaves in autumn will reduce the amount of infectious spores next spring. Promptly pruning out infected shoots will reduce subsequent infection. Fungicides for gardeners (Adobe Acrobat pdf document outlining fungicides available to gardeners) Links Sulphur (Mildew Clear for Edibles) can be used on grapevines for powdery mildew control(full details on product label). The RHS believes that avoiding pests, diseases and weeds by good practice in cultivation methods, cultivarselection, garden hygiene and encouraging or introducing natural enemies, should be the first line of control. If chemical controls are used, they should be used only in a minimal and highly targeted manner. Non-chemical control Fruits damaged by powdery mildew are often then infected by the grey mould pathogen androt, or become mummifiedProlonged leaf wetness is not required for infection by p owdery mildew, but high humidity is, so providing good air circulation is still important. Avoid drought stress and the overuse of nitrogenous fertilisers. Chemical control