Invest in a varied selection of allium bulbs in different sizes and shapes, either as ready-made collections in garden centres, or buy individually.
In pots, choose a deep container. Fill two thirds full with good quality multipurpose compost. Plant bulbs close together, a bulb width apart.
For a ‘lasagne’ bulb display, layer your planting. Cover over the larger bulbs with more compost and leave room for a top display of smaller bulbs.
Plant small bulbs one bulb width apart and 5-10cm (46in) deep from the surface. Cover with compost and water well, placing the pot in full sun.