For years I have waited until late October to bring the jade plants back into the house for winter. Overnight lows are likely down to 5 or 6 degrees C by then. They always lose a lot of leaves when the come in, but quickly replace them with new leaves. It occours to me that this leaf loss may be due to the temperature shock of changing from lows and highs of 5 to 10 C outdoors to a steady 20 C indoors. Environment Canada's average temperatures for today (September 5) are highs of 20 C and lows of 12 C. Perhaps they should come inside now, although they would miss a month and a half of better light. When should jade plants come indoors?