Cornelian Cherry flowers in March, when very few other shrubs or small trees are blooming. The bright yellow flower umbels cover the branches for several weeks. According to the JC Raulston Arboretum, this is the best Cornus mas for tolerance of heat, with excellent disease free leathery green leaves and virtually no fruit. Fall foliage can be reddish purple some years, but will not be showy on other years. When in bloom, people often think it’s a large Forsythia.