A method of protecting a plant against insects selected from the order Thysanoptera and Diptera, which comprises treating the plant propagation material thereof, with (a) a nematicidally effective amount of a nematicide selected from abamectin, emamectin benzoate and spinosad and optionally (b) at least one insecticidally effective amount of an insecticide selected from imidacloprid, clothianidin and thiamethoxam.
