Procymidone is a pesticide. It is often used for killing unwanted ferns and nettles, and as a dicarboximide fungicide for killing fungi, for example as seed dressing, pre-harvest spray or post-harvest dip of lupins, grapes, stone fruit, strawberries. It is a known endocrine disruptor (androgen receptor antagonist)^{[citation needed]} which interferes with the sexual differentiation of male rats. It is considered to be a poison.