Citrus Dahlia Tuber Collection10 tubers. If you are going to grow dahlias, you need this collection. These varieties are the backbone of our dahlia field production. And what is not to love about a bold and bright citrus toned bouquet in the fall. This collection includes a mix of 10 tubers of our best producing dahlia varieties including: Boom Boom White, Maarn (Orange Sylvia) Golden Scepter & Cornel Bronze.