Can raspberry dressing rumex lettuce be grown in Mn
Thank you for the question. You can grow this plant as an annual here in Minnesota. I learned that it is also called red veined dock, Rumex sanguineus. It is said to taste like spinach or chard and is often used as a container plant due to its bold foliage. Read more about it here:
Without more information about the white spots, please research our on-line diagnostic program for suggestions: http://www.extension.umn.edu/garden/diagnose/plant/vegetable/lettuce&endive/index.html
Thank you for contacting Extension.