Gunnera

Question

In order to maintain a moist soil can it be planted in a shallow area of a pool, or do the roots run too deep?

Answer 1

A Gunnera has a large rhizomatous root system. I would make sure you plant in an area that they have room to spread.

https://www.gardeningknowhow.com/ornamental/foliage/gunnera/growing-gunnera-plants.htm