Allan Ladd gardens in NSW Australia. Many of the Hippeastrum species grow well in this area, as outdoor night temperatures reach 0 °C only a few nights of the year and often the winters have approximately 6 weeks with night temperatures around 5 °C night and 18 to 25 °C day. The soils are of rich mountain type. The wet season often varies, though usually from January to May with dry winters being most common.