Yes, it can happen and we're prepared for it with safety in mind.
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Coming back to the safety of candle burning. I grew up with this tradition and brought it with me when I immigrated in 1955. so the tradition continued. let me tell you how it works. first of all a fire-extinguisher stand close to the base of the tree. when we look for a tree, we keep in mind of the shape of it. and btw it has to be a Spruce tree, for a Spruce tree has shorter needles and some trees have stronger branches. a candle is placed in a candle holder as close to the tip of a branch. we make sure that nothing comes close to it as far as decoration goes. the candles get placed and then I start decorating the tree with the same idea of not getting too close to the candle. now what's importing to know is that we watch the candles very closely. my husband sits facing the tree when we've company so he can get up and walk around the tree especially when the candles burn down smaller and smaller.
A candle burns all the way down until there is not a drop of candle wax left in the candle holder. close to this stage a candle may flair up. I make sure I get a quick picture of it and then Hans snuffs out the flame with his candle snuffer... so far we have never ever had to us the fire-extinguisher!!!!!
A great vigilance needed , As a small child I remember candles on the tree and all the points you made were observed , my dad always was the person on guard in case of an accident ! Great shot !
So interesting. You have just evoked a memory from the early 80’s. I was training to be a midwife working Christmas Day night. The senior midwife was from Germany and bought small parts of a Christmas tree and burnt it in the office. The burning spruce gave off a lovely smell. Fortunately it did not set off the fire alarm.