Healing and poisonous medicinal plants

The beautiful, informative calendar introduces you to some well-known and lesser-known medicinally effective plants, which also include highly poisonous plants, because: "The dose alone makes the poison." This insight, expressed by Paracelsus almost 500 years ago, is still valid. However, the substances in foxglove, castor or opium poppy unfold their healing power only when used properly.