RHS 1L Ready to Use Bug & Mildew Control

Product Information

Under certain environmental conditions some Stemphylium speciesare thought to be able to produce a sexual stage, and spores liberated from the fruiting bodies of the fungus in this scenario could account for the overwintering survival of the fungus and its long distance dissemination. Mulch plants each season to avoid drought stress, which predisposes them to powdery mildew infection, and make sure vines are adequately watered helping to prevent this problem

Prolonged 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 The best time for summer spraying is in June when the more vulnerable newly hatched scale nymphs are present Galls should be removed promptly before the fungus sporulates (the white stage when the spores are released and the disease can spread) Where you cannot tolerate scale, manage them using the information above as your first course of action.Powdery mildew: the powdery mildew fungus over-winters in the buds and when these start to growin the spring it produces airborne spores which spread the disease. The pathogen originated in north America, but is now present wherever vines are grown. Leaf infection reduces plant vigour. When fruits are infected they split as they expand and this allows secondary infection by grey mould ( Botrytis cinerea).

RHS Bug & Mildew Control is a pesticide free, ready to use spray that works by physical mode of action and contains a blend of surfactants which stop the pests from moving and being able to feed. Ideal for flowers, fruit, vegetables and ornamentals, the spray can be used both outside and undercover to control a wide range of garden pests, including Aphid, Whitefly, Red Spider Mite, Scale, Mealybug, and Psyllid. RHS Bug & Mildew Control provides plants with foliar nourishment to promote healthy growth and abundant fruit, vegetables and vibrant flowers. When used regularly powdery mildew can also be controlled as the formula washes the foliage to remove any active mildew spores. No harvest interval is required, meaning any produce grown can be eaten within hours after application. What’s more this product is safe to use around the whole family, including children, pets wildlife and Bees. Avoid overhead watering as this increases humidity around the foliage, which makes the plants more prone to powdery and downy mildewsScurfy rose scale can be difficult to control, replacing severely infested plants can be considered

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. 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.Where you cannot tolerate scurfy rose scale, manage them using the information above as your first course of action. RHS Bug & Mildew Control is a pesticide free, ready to use spray that works by physical mode of action and contains a blend of surfactants which stop the pests from moving and being able to feed. Ideal for flowers, fruit, vegetables and ornamentals, the spray can be used both outside and undercover to control a wide range of garden pests, including Aphid, Whitefly, Red Spider Mite, Scale, Mealybug, and Psyllid. RHS Bug & Mildew Control provides plants with foliar nourishment to promote healthy growth and abundant fruit, vegetables and vibrant flowers. When used regularly powdery mildew can also be controlled as the formula washes the foliage to remove any active mildew spores. No harvest interval is required, meaning any produce grown can be eaten within hours after application. What’s more this product is safe to use around the whole family, including children, pets wildlifeand Bees. Where you cannot tolerate soft scale, manage them using the information above as your first course of action. 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. Powdery mildew initially grows over the leaf surface, visible as a white powdery coating, particularly on the underside of the leaf

Badly affected shoots are best prunedout and disposed of as soon as the symptoms are seen. During routine spring pruning any shoots showing large patches of mildew around the thorns should also be cut out Encourage predators in the garden, some ladybirds, parasitoid wasps and some birds will eat scale insectsDo not over-fertilise (especially not too much nitrogen) as succulent growth is particularly susceptible Encourage predators in the garden, some ladybirds, parasitoid wasps and some birds will eat scale insects.The native kidney spot ladybird, Chilocorus renipustulatus,specialises in feeding on scale insects and can naturally coloniseaffectedplants reducing populations As with other powdery mildews, these species grow initially over the leaf surface, feeding from the tissues but not killing them, and producingairborne spores which spread infection.Later the tissues die and, unusually for powdery mildew infection, drop out leaving holes and tattered edges to the leaves. An overwintering stage is of minor importance, most survival through the winter is as mycelium on the evergreen leaves. Powdery mildew, rustand leaf spots:The fungicides 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 mildew and rust diseases on ornamental plants. They would probably also give some control of rhododendron leaf spots (Provanto Fungus Fighter Plus and Toprose Fungus Control and Protect mention'leaf spot of ornamentals' on the label).