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Plant Problems

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PestOther

Rats and mice

Rodents that gnaw stored produce, seeds and bulbs, raid compost heaps and chew through stems, irrigation pipes and wiring.

Also known as: Rodents

Symptoms and identification

Gnawed seeds, bulbs and fruit show small teeth marks. Droppings, runs through grass and burrows appear near sheds, compost and bird feeders. Pumpkins, corn cobs and stored crops are chewed into, and seedlings are dug up.

Causes

Rodents are attracted by easy food and shelter, including open compost heaps, bird feed, pet food, rubbish, woodpiles and dense, untidy vegetation, and they breed quickly.

Organic treatment

Use snap traps placed along runs and protected so that pets and birds cannot reach them, and check them daily. Cover bulbs and seedbeds with mesh.

Prevention

Keep compost bins closed and avoid putting cooked food or meat in them. Store seed, bulbs and bird food in metal containers, and clear rubbish and woodpiles. Seal gaps in sheds.

Chemical treatment (use with care)

Rodenticides are dangerous to pets, children and wildlife, including owls and other predators. Use them only if necessary, in tamper-proof bait stations, as the label and local law direct.

Plants often affected

Rats and mice: symptoms, causes and treatment