Posted: 03/07/2016 at 08:24
Dig a large hole about 1m across and as deep. Line it with plastic , puncture some holes in. Gunnera like to have wet area for their roots, but not standing in water. Mix the excavated soil with some compost or well rotted manure or other organic matter. Use this mix to plant your gunnera.
Looking after it in winter will depend on where you are in the country. Usually the leaves are used to fold over the crown, and a mulch to protect it.