You can propagate either by germinating the seeds or by stem cuttings.
For propagation through cuttings take a bottom pot used for cuttings ( or a plastic tray). Fill it up with river sand. Take stem cuttings of the ripened stems. The incision should be at a n angle ( 30 to 45 degree!), preferably one cm below the node. Please see that two nodes are intact. Remove all the leaves except one. Insert the stems ( lower part ) into the sand about half an inch deep in the soil. You may put 10 to 20 stems in a single bottom pot. Keep the pot undisturbed under a tree or in a shaded place. Water the pot regularly ( daily 2 times - once in the morning and once in
the evening). You should not allow the soil to dry . Within a week you can see few buds arising. Success rate depends upon how nicely you carry out the procedure, especially the incision, which should be carried out using a very sharp knife without any damage to the stem. You can also use some rooting hormone powders available in the market for cuttings. When you use this , you have to dip the lower part of the stem (cut surface) first in water , shake it, then put it into the powder so that the powder sticks to the cut end. Then shake off the excess powder and then insert in the sand and follow the usual procedure of watering it regularly.
When the cuttings are rooted well and when you can see few leaves on a new shoot (it takes about 15 days after new shoot), you may transplant the
plant to a regular pot filled with soil mixture and proper drainage. The ideal mixture is 1:!: 2 (river sand + red soil + cow dung manure or FYM).
All the best.
Dr. Mahadeswara swamy.