At its best:
Jun, Jul, Aug
Cover the base of the pot with crocks, then fill it two-thirds full with compost.
Plant the euphorbia and fennel plants towards the back of the pot, then plant the saxifrages and ajuga at the front. Space plants well so they have room to grow.
Top up the pot with compost, firming it around the plants with your fingers.
Add a thick mulch of gravel to add contrast to the colours, and help conserve moisture. Water the pot well and allow to drain thoroughly before popping it in its final planting postion.