[Tilted Irish Kilt]

Geraniums and coleous will over-winter in adequate sunlight or full spectrum (grow lights) with reduced watering in winter. My expierience has been that all bulbous plants need to go through a dormant season, to reviitalize , for spring growth.
Cannas, dahlias, and caladiums need a 'chill' dormancy , but need to not get frozen .
That might get acomplished by bulbs placed in north end of the basement with reduced light, reduced moisture, and placed in "onion bag" allowing air flow.
Its hit , or miss according to basement moisture. YMMV

[FamiliarFace]

Thank you, thank you! I will try your hints!