i know this plant as arrowhead and it started life as an indoor plant.
at death's door, almost killed by kindness, it was relegated to a quiet spot at the feet of my sasanqua camellia hedge where it was promptly forgotten and utterly neglected.
it has now taken over a large area, is lush and healthy
perhaps it's an approach that should be applied to the rest of the garden!
this is my entry for