Saturday Morning With Jack Tame

Codling moths are a pain in the backside for people that grow apples. A week or so after flowering, the fertilised, tiny apples (known in the UK as “codlings”) are the perfect target for the moths to lay eggs in.  The caterpillars emerge from the eggs and tunnel into the developing fruit, causing ugly tunnels, often with fungal infection, brown decay, and “frass” sticking out of the hole. Once these caterpillars are inside, you won’t get them out and the fruit will be rather awful as it develops.  In the old days we used to regularly spray pretty nasty insecticides on our apples: Carbaryl, Organophosphates, etc. Not nice!  The moths are quite pretty: golden colours, about a centimetre in size, flying around the orchard when the flowering has just finished.  The caterpillars exit the fruit when full grown – they descend down the stem/trunk and pupate in loose bark or further down in the soil.  A second Generation develops in summer, especially in the northern parts of NZ.  Second