Design for minimal maintenance, passive irrigation canals.
The project is to create a margin which entirely shades the interior of the canal.
Carex pendula has deep roots, dense foliage, is highly shade tolerant, and has the potential to purify water. Its strength may prevent wild boars from digging on the margins.
Planted Carex pendula on canal margins. Iris pseudacorus removed from margin where it grows into canal; it was divided and replanted behind the Carex's rhizome barrier. Salix alba leaf/branch filter.