Propagation: PLANT PROPAGATION.....THE BASICS III, 1 by

wrote:
Jnette,
If I remember correctly, Coleus also root along the stems. I haven't grown them for years because they don't do good here. I do remember that it is better to start new plants from cuttings, than save the mother plant. They are annuals so need to be restarted since it is the color that is wanted, not the flowers.

As far as your begonia, they are are not considered annuals but permanent houseplants. I had an angelwing begonia years ago that I took cutting off to give away. It grew to 3ft but I kept it shorter. I have found that Begonias can be rooted in water but best time is when they are actively growing. They also root great in mix of peat and perlite or vermiculite. Then placed in a plastic bag till rooted. If you tug a cutting and it resists then it is rooted.

Below is a begonia I grew from cuttings for my daughter. It is pretty much an eveerbloomer. Don't know the name but blooms early and grows to 2 feet and bushy.