Tropical plants in the garden and cold environment
Before an approach of a cold night water plants which grow in your garden in an open ground. The plant should “slake its thirst”, so when its roots “will be switched off” because of cold, leaves have not lost the elasticity because of lack of water. If it happens, metabolism in leaves will be stopped, and they will freeze. The temperature of the ground is higher than air temperature; therefore watering won’t be harmful. If air temperature falls below zero, water all plant from a hose (warm water is preferable). At cooling and freezing water gives a lot of heat.
This advice does not concern plants in pots if you need to transport them - plentiful watering will lead to wet soil for a long time, which is bad for indoor plants in the winter.
You may warm a plant at a cold snap. For example, the small heater near a tree will allow to lift temperature a little. The best choice for this purpose is to use infra-red heaters with reflectors, which allow to heat up the removed objects without wasting energy for heating of air.
Next day after a cold night the plant should be “enabled to get warm�, being put on the sun. Tropical plants can survive a short-term cold snap (for example, one night), but they won’t survive cold for some days.