Jun, Jul, Aug
Fill a pot with equal volumes of seed compost and perlite – this will ensure good drainage.
Choose a stem with no flowers. Cut just above a leaf node, using sharp secateurs.
Put your cutting into water, while you take your other cuttings, so it doesn't dry out.
Remove the lower leaves, leaving just a couple at the top of the cutting.
Make a final cut just below a leaf node at the base of the cutting with a sharp knife.
Insert the bottom half in a pot of cuttings compost. Water well and place in a well-lit spot.