Dahlia tubers come in all shapes and sizes. If you have ordeed single tubers from us they have been pre warmed to encourage eyes to form. Each tubers is checked to ensure it has an eye before packing and sending. If you have ordeed tuber clumps ther are not per warmed but will have several eyes around the crown. These will be dormant upon receipt but will begin to form once the tuber is warmed and watered. You can watch our handy video on how to prep & pot your tubers below.