Toss a colorful salad by adding Forellenschluss lettuce to your garden. This pretty, maroon-speckled romaine is also known as 'Freckles' or 'Trout Back lettuce' (Forellenschluss means “speckled like a trout” in German). Plants grow best in cool weather and yield the luxuriously delicate texture and flavor of a butterhead. 'Trout Back' lettuce dates to 1660 in Holland; the seeds hit American shores in the 1790s.