We found that some seedlings kept their brown foliage. We made a selection and named the best ones. Rodgersia Chocolat Wings. Flowers red-pink. In summer, the foliage colour can turn dark purple green. Do not grow these in a greenhouse. All Rodgersias will sprout green leaves. This happens because the temperature is uniform and less cold. High humidity also plays a role in this. Leave the plant alone for a few years and you will get to enjoy one of the finest Rodgersias available.