"Kasvikon oppisanoja" is a book by the Finnish writer Elias Lönnroth, in which he shares his knowledge about plants. This book contains a lot of interesting and useful information about various types of plants, their properties, everyday use and medicinal purposes. The author describes in detail both wild and cultivated plants, which helps the reader to deepen his knowledge about the world of vegetation. This book will be an excellent reference for those who are interested in plants and want to expand their knowledge about them.