I've got a lovely yellow begonia still in flower in a pot outside at the
moment. What is the best way to overwinter it? Should I wait until the
frost kills off the top growth then dig out the corm or just put the
whole pot in a cold but frost free shed - it won't get much light
though? What is the best way of keeping the corm alive and healthy for
next year?

--
David in Normandy.
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