Each dahlia tuber is guaranteed to have at least one eye. We sell single tubers, no clumps or cuttings. Tubers vary in size and shape—some are small and curved, others may have long or short necks. If you're looking for perfectly uniform tubers, we may not be the right fit for you. I disinfect my tools and practice careful pest control with the utmost care for pollinators. While I don't conduct virus testing, I carefully inspect and cull anything that appears suspicious.