モンシロチョウ
The flowers are pollinated by various bees like "Andrena agilissima" and flies (entomophily). "Sinapis arvensis" is the host plant of the caterpillars of some Lepidoptera, such as the small white, "Pieris rapae". The seeds are toxic to most animals, except birds, and can cause gastrointestinal problems, especially if consumed in large quantities.