| Another way you can use for zonal pelargoniums is to snap off a branch about three inches down from the tip. Use new wood. Take off the bottom leaves, if any - and leave the 'cutting' on a bench to dry/callus over on the broken end. This takes one or two days.
Don't worry if the leaves wilt a little. Take a three inch diameter plastic pot that's a little deeper than your cutting and fill to nearly the top with sharp grit no bigger than an eighth across. Ordinary builder's sand is useless because it holds too much water. Push in your cutting with the callused end so the gravel lightly scores the stem. Dip the pot in water and then let it drain before you put the pot and cutting into a cool place with bright but indirect light. If the cutting is getting reliable rain don't bother watering unless the weather is hot and dry. Otherwise keep it lightly damp but not wet. Most cuttings taken this way will root and grow on. Duds are easy to spot because the stem blackens. Remove them promptly if you have done a number of cuttings and they are in a pot together. You can also do this in the early fall and then over-winter your new plants. These plants can tolerate some frost. If it is five degrees of frost or less the stems blacken and go to mush in the usual way - but you can get regeneration from the base. The plant is not as vigorous, however, but you may be able to save a favourite colour. Another way to keep your stock of plants up is to plant out the seeds which is always an adventure. If you are carrying your plants over from year to year they can get to be both leggy and woody - and taking stem cuttings is a good way to 'keep' the plant - without the aged appearance. | 
