Most of the advice I've seen, so far, has suggested over wintering my
potted bay tree safely indoors - preferably somewhere with a minimum
temperature of 5 degrees.

Just wondering... Many people in here successfully over winter their bay
trees simply leaving them outside - possibly moving the pot to a
slightly more sheltered spot and being vigilant, in terms of
temperatures falling below a certain temperature?

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Flower Bobdew
South Facing Garden
South West: UK