Store tubers in cardboard boxes between layers of vermiculite, peat moss, sawdust or wood shavings. Place a two to three (2 to 3) inch layer of material in the box and then a layer of the tuberous begonias. Cover lightly with material and continue to layer. Store in a 45 to 55 degree location.
Check tubers throughout the winter. If shriveling occurs, moisten packing material lightly with water. If roots appear to be rooting or rotting, move to a drier location temporarily; watch humidity levels and improve air circulation.
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