Daddy long legs have just started to appear here so the leatherjacket damage should decrease from now on. Nematodes are recommended for application in September as this is the time when most eggs will have hatched into small susceptible larvae that can be easily killed by nematodes. You could treat now if its such a big problem but use double strength to give the nematodes a chance. Harrods and Green gardener are supplying it so should be no trouble getting hold of it. Once applied it should take effect within 48hrs and you can replant after that but remember to do the late summer treatment for best results. Death to leatherjackets!
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