https://doi.org/10.2307/3496139 • https://www.jstor.org/stable/3496139 Several weevils attack root and tuber crops. These include: Cylas formicarius (Fabricius), C ...
All you need to do is trick the dahlia tuber into making new shoots in late winter. These can be snipped off and are so vigorous that they'll root in compost within seven to eight days.