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Moderator – I don’t think there is one! Contacting the RHS experts with your questions can be done via the RHS members advisory service GardeningAdvice@rhs.org.uk – you’ll need to include your membership number. Alternatively write to them at Wisley Garden. Lawns are the most problematic garden plant as far as pests go – this is one of the reasons why greenkeepers are a specialist breed of professional gardener! And why golfing greens etc are replaced so often. Leatherjackets are tricky to control
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Hi Bill Large numbers of chafers in lawns are always bad news, and one of the reasons (along with ants) that lawns are probably the most pest ridden plant in the UK – not least because by the time you usually notice chafers its getting a bit late to take control (ideally control in late summer is best – but its not until mid- late Sept that the birds/foxes/badgers find them and the problem is noticed). Your best bet now is probably to make repairs/re-turf in spring, when the grubs have finished feeding
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Hi Rae Bad news I'm afraid - the vet is right - no way of controlling them - and unfortunatly the only way you are likley to find where they are coming from is if you get bitten....
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Could be cabbage root fly Delia radicum – a bit like carrot root fly but found only on brassicas. Has several generations a year. No treatment available once you have it – the only control is to use collars at the base of the stem (this tends to only be partially effective) or grow the crop under fleece.
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Sorry Hydropiper thats not Cushion scale ( Pulvinaria floccifera) but Fluted scale Icerya purchasi (I guess you could have ment its other common name used in the USA - cottony cushion scale). The give away is the fluted appearance of the egg masses. This was until recently primarily a glasshouse problem in the UK – however for the past few years it has survived quite well out of doors in London – it has a wide host range, but acacia is a favourite. The pictures show the dead/dying females – the brown
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Top pic is adult female Fluted scale with egg masses Bottom pic are scale insect nymphs could be any species, however seeing as its the one on the RHS advisory page they must be cushion scale (presuming the RHS entomologists check all content). Cushion scale egg masses are also white and fluffy and usually have the brown blob - but do not have the fluted appearance and are usually only found on plants in spring/early summer.
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Can't access your picture but the description matches that of some of the hoverfly pupa - This type of pupa is typically produced by species which as adults are nectar and pollen feeders and the larvae eat aphids (greenfly etc.) so they = goodies and not a pest.
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Thanks Miranda - inspired me to have another go at getting to the picture - got to the pictures and yep they be Hoverfly pupa. - odd looking things!
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Have the leaves fallen off or been eaten away? I suspect it’s may not be insect damage and instead something cultural or a disease. Little black and white bugs may be shield bug nymphs - whilst some suck sap most do not cause any damage – they would not cause the plants to collapse in the way you describe. If it is a pest glasshouse red spider mite may be a possibility if the leaves went mottled yellow before they dropped – check the underside of the leaves for signs of webbing and mites (need a
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Curled leaves with white powdery stuff in them on Bay = bay sucker, only affects the bay – see http://www.rhs.org.uk/advice/profiles0500/sucker.asp The caterpillar/brown pupa = as sue said is probably one of the tortrix moths. Difficult to control due to them being curled up in the leaves. Squashing them is probably the Black tips to leaves is something else – possibly cultural or disease
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