At its best:
Mar, Apr, May
Place pieces of terracotta over holes in the pot's base to allow water to drain freely.
Tease out the fibrous roots of the carex to encourage it to quickly send out new roots.
Part fill the pot with compost. Set the carex in the centre, leaving room for other plants.
Split the narcissus bulbs carefully and set them in position around the carex.
Plant aubretia in the gaps at the edge of the pot, so they can trail over the side.
Water the container well and allow to drain fully. Site in a sunny position.