Red Dragon Contorted Filbert. 'Red Dragon' is a new ornamental hazelnut (Corylus avellana L.) cultivar. It was released by the Oregon Agricultural Experiment Station in March 2008. 'Red Dragon' has red leaves, contorted growth habit, and resistance to eastern filbert blight. These are on their own roots and not grafted. So this will do away with suckering from the understock which can ruin a perfectly good plant. Once the burgundy foliage emerges in the spring, then it will slowly turn to a greenish-burgundy.