You might be thinking of Echiums, or tower of jewels. They are biennial plants that we bring to the Chatfield greenhouse over winter to give them a period of gentle cool temperatures to simulate the winters in their native environment. They need the cool period in order to bloom the next spring.
You might be thinking of Echiums, or tower of jewels. They are biennial plants that we bring to the Chatfield greenhouse over winter to give them a period of gentle cool temperatures to simulate the winters in their native environment. They need the cool period in order to bloom the next spring.