Hardwood stem cuttings
The following is taken frm BBC gardening
Take stem cuttings of roses in early September by pushing cut stems straight into the soil in a nursery area of the garden, where they can be left to root and develop for about a year. Most types of rose can be propagated from cuttings, especially the rambling types. Just take a length of stem, removing the soft tip above a leaf joint, and cut below a joint at the base, removing all but the top three leaves. Then push the 30cm (12in) cutting into the soil to about half its length.