context: The culture of decorative garden chrysanthemums has a thousand-year history. In China, where most of the chrysanthemums come from, garden forms began to be planted as far back as 551 BC. e. Then chrysanthemums were brought to Japan, where they became a national flower. Plants came to Europe in the 17th century, to Russia in the mid-19th century.
question: When did garden chrysanthemum begin to grow in Russia?
answers.text: mid-19th