What happens to the flower as it burns down? Most of the shapes will leave a shell so that the flower is illuminated by the flame. Some of the slender shapes will burn more compleatly and the flower will be left sticking up. Do you let the flower burn with the candle? No, You must pick off any flower that is near the flame. How long do they burn? A really long time. This is the highest quality wax mixed with bees wax so our candles will outlast most candles. Our smallest candle burns for 25 hours and our largest candle burn for 400 hours. Most of the shapes are ranging around 100 hours. Do they drip or smoke? No, they do not drip or smoke if properly taken care of. The wick must be trimed to a 1/4 inch. The easiest way to do this is to break off excess wick before lighting. All candle have burning instructions on the back. Each candle features a unique design of real pressed flowers that glow when the candle is lit . All candles are scented with lavander oil.