Injury is often sufficiently severe for patches or even large areas of grass in pastures or meadows to be completely destroyed. The Royal Horticultural Society is the UK’s leading gardening charity. In the soil, near where it has been feeding. The grubs start feeding on the roots. Eggs are laid in the turf and these hatch a few weeks later. Controlling Grubs in Containers. The nematodes are sold as Nemasys Chafer Grub Killer, available from most suppliers of … Read more. I have a picture of my little daughter using one for a barrette to decorate her hair. I use to think were cutworms but they are not. Among others, turfgrass is perhaps the most common host for white grubs, along with Napier grass. These eat the roots of a wide range of plants and can bore into tubers of cyclamen and begonia, and into stem bases of cacti and succulents. Evidence of their activities can be seen in a number of ways: There are currently no pesticide controls for chafer grubs in lawns which can be applied by home gardeners. A combination of some species of chafer grub and larger animals that feed on them can quickly turn a lawn into something that resembles a ploughed field. They have stout white bodies curved in a C shape, light brown heads, with three pairs of legs at the head end. They all roughly look the same: Off white or dirty white in color with brown heads. The adult chafers are mainly reddish brown in colour with distinctive large antennae. Apr15. You can effectively control and kill white curl grubs in the soil by applying Neem Oil. White grubs are the larvae of May beetles, June beetles or Japanese beetles. Grubs are characteristically C-formed with six appendages toward the front of the head. The latter is generally found in or near wooded areas on sandy soils and is about 9mm long and reddish brown in colour. If the grubs have got into the composter, make sure you treat the compost thoroughly. Chafers overwinter below ground as pupae and the adults emerge in spring. White grubs (a) often occur in soil, decaying organic matter, rotting logs, etc. Chafer grubs can  appear similar to the larva of the stag beetle (Lucanus cervus). Chafer grubs can be found in the soil under the loose turf. A few chafer species can damage plant roots including some that feed on turf (see chafer grubs in … —Janet Kilburn Phillips, Take care of the soil, and the plants will take care of themselves White grubs are most often found just below the surface of a lawn or garden where they live in the soil. 222879/SC038262, Damage to lawns is most obvious between autumn and spring when the grubs are reaching maturity, Birds, particularly of the crow family (jays, magpies, rooks and crows), badgers and foxes tear up turf in order to access the grubs to feed on them, Damaging infestations can be very localised and sporadic, Chafer grubs can be found in the soil under the loose turf. Some species remain as larvae for up to three years. The chafers (or Maybugs) produce the largest grubs, up to 5cm (2in) long. They live in beds and borders and feed on roots and vegetables. Chafers have strong, hard cases that protect their delicate wings, when in flight these cases make a distinctive whirring sound. Encourage birds that prey on the beetles and their larvae. It should be applied in summer when the soil is moist and the soil temperature is between 12°C and 20°C, ideally in August or early September when the larvae are nearest to the surface. the RHS today and get 12 months for the price of 9. This is a species that feeds on decomposing organic matter and as such is a useful garden insect. The BBC is not responsible for the content of external sites. Grub worms coming inside start in the soil outside. I'd go for a chemical approach as an immediate measure, as the nematode treatment won't be effective until the soil warms up (I don't think they're even sold til sometime in the summer). The white grubs feed on the underground parts of various plants, but white grubs prefer grasses. Adult chafer beetles feed on the foliage of many plants but are generally not a problem. They have plump white bodies that curve into crescent shapes, brown heads and three pairs of legs. The summer chafer is light brown, about 16mm long, and distinctly hairy. Where possible eradicate the larval stages by lifting sections of turf and disposing of the larvae. In heavily infested gardens, the adult beetles fly up from turf in large numbers at dusk from late May to June. Feeding continues as the grub growns to about 10mm, before burrowing deeper into the soil for pupation. A healthy lawn can handle a few grub worms in the soil and will do little or almost no apparent damage. The chafer species most often found damaging lawns are the garden chafer, Phyllopertha horticola, and the welsh chafer, Hoplia philanthus; the latter is often found in sandy soils and is not confined to Wales. Wireworms (b) have hard, cylindrical, bodies. BBC © 2014 The BBC is not responsible for the content of external sites. The most effective way to eliminate grubs in potted plants is getting rid of the infested soil. When disturbed they curl up into the shape of a ‘C’. 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