When to Water?

Hi,
AV are pretty tough but they mustn't suffer frostbite and mustn't be overwatered.
There lies the problem how much is too much?. Well the soil that AV is in must drain quickly, so the plant is watered but the roots do not stand in water. Let the soil dry between waterings. Use the knuckle test, push a finger into the soil up to the first knuckle, if it is dry; water. Water even less in winter.