Designers of show gardens on the prestigious Main Avenue at the event are urging gardeners to welcome the plant, saying it is great for absorbing water and softening hard edges.
Branding the likes of rewilding as a 'step backwards', the 75-year-old celebrity gardener said the assumption that we should reduce the number of 'exotic' species we plant was 'erroneous'.
The royal, 76, today joined King Charles at the Chelsea Flower Show in West London as he continues his return to public duties amid his cancer diagnosis.