MATERIALS

• Large, wide-necked glass jar

• Gravel

• Scoop

• Ground charcoal: pet stores should

stock this

• Potting compost

• Helleborus niger: an alpine variety with

a small root ball

• Viola x wittrockiana, pansy

• Humata tyermanii, bunny fern

• Moss: available from florists

• Soft paintbrush