Light and Heat
No matter the species, aralia plants need light to mimic the tropical climate of their native Polynesia. Though they will survive under low light as they long as they have moist soil, they do best in medium or full sun when grown indoors, but should be planted in shady areas if placed outside. Aralias prefer temperatures between 60 and 85 degrees Fahrenheit, so keep them inside or move them indoors during the winter.
Watering
The thin, fine roots of aralias are subject to rot, so allow the upper half of the soil to thoroughly dry out between waterings. If grown under low light, they may need water just once or twice a month, so monitor the soil carefully. In the winter, the growth of aralias slows considerably and they require even less water. If conditions outside are wet, provide them with shelter or move them inside to prevent root rot.