Most overwintering guides flatten storage temperatures into a single vague range. That is a problem: caladium tubers die if stored below 60°F, while gladiolus corms stored above 45°F rot from Fusarium. A dahlia stored at the correct 40–50°F will kill a caladium stored alongside it. The difference is real, sourced, and matters every fall.
This scheduler pulls dig triggers, curing protocols, and storage specifications from university extension publications (UMN, Iowa State, UF/IFAS, Clemson) and the American Dahlia Society — not gardening blogs. Select your USDA hardiness zone and bulb type to get the zone-specific schedule. For the plants hardy in your zone, it tells you that too, so you are not digging needlessly.