This year the National Trust kindly provided us with an automatic watering system for our polytunnel. It does a great job; plants are provided with water, automatically, all day long and it is a moist environment - perfect for slugs! They have particulary liked nibbling the chilli plants and the aubergines have suffered too.
To defend the chillies, copper tape has been put around pots with the bottoms cut out. These are then placed over the plant. Slugs hate copper, it sends an electic shock through their slimey bodies when they come in contact with it.
A different tactic has been used with the aubergines, double defences - chives and sharp sand. Slugs produce mucus or slime to move so sharp or dry objects cause them to over produce slime and exhaust themselves. Onions and members of the onion family are a long used natural deterrent for pests but will they defend the aubergines?
Lorna mca
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