Gardening Lethal Leatherjackets Pippa Greenwood Daddy-longlegs or crane-flies are starting to hatch out now as adults, but it is their young – known as leatherjackets – that really cause grief in gardens. If your lawn has yellowing patches on it or you’ve noticed it being ripped up in the last few weeks, chances are leatherjackets are to blame and it is likely that the problem will get a lot worse. Leatherjackets feed on grass roots (and can also cause problems in flowerbeds and vegetable plots) and this may cause the plants they attack to be weakened and even die back; worst of all, these juicy larvae are tasty snacks for animals such as crows, rooks, magpies, badgers or foxes. So if there are leatherjackets in your garden, these animals will search them out, ripping up your lawn or excavating beds and borders in the process. Lawns are usually worst affected and can be quickly devastated. What is the best way to check if you have them? Early in the evening, water a couple of the yellowed patches thoroughly and do the same with a rippedup patch. Next, cover these areas in black polythene weighed down with a couple of bricks or similar. A double layer of black bin liners or an opened-out plastic compost bag will work well. Next morning, lift the polythene and you’ll see the pests on the soil or lawn surface. So how do you know leatherjackets are to blame? Leatherjackets are greyish-brown, tubular, legless, up to about 4.5cm long and so nearly transparent that you can often see inside them, lunch and all. To remove more, repeat this black polythene trick and deposit the pests on the bird table as free and nutritious bird food. For a much quicker, easier and more thorough solution, use the biological control nematode ‘Nemasys Leatherjacket Killer’. It is quick and easy to apply – I just use a watering can and water it onto the affected area shortly after I’ve seen the first daddy-longlegs and when soil conditions are right – 26
usually late August to late October. As long as you keep the area moist for about three or four weeks, it works a treat – and is even safe if you have a dog, pet rabbit or other pets (or kids!) who use the lawn. So how can you get hold of this? There are two pack sizes available, suitable for standard lawns or those with a very large area to cover but you won’t find them in garden centres as they have a short shelf life. You can, however, find out more and order them from www.pippagreenwood.com/products in the Protect Your Plants section. We’ll send them out by first class post in an insulated envelope for you to show those pesky leatherjackets who’s the boss! Visit Pippa’s website www.pippagreenwood.com and you’ll find some great gardening items: Nemaslug, green controls for leatherjackets, chafer grubs, ants and greenfly, plus garden plant supports, raised bed kits, Easy-Tunnels, gardening tools, Grower Frames, signed books and more! You can even book Pippa for a gardening talk at your local gardening club.
DAVID MOSELEY
Electrical Contractor Domestic and Commercial Work Additions and Repairs Safety Testing and Inspection Security & Garden Lighting
020 8715 6606 • 020 8942 3800 davidmoseley@blueyonder.co.uk
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