Water the plant well the day before.
Take a cutting about 4-inches long, with 3 nodes, from a healthy stem.
Use a perfectly clean container. Rinse the container with a drop of bleach if you are uncertain about its spotlessness.
Remove all but the top leaf or two. There should be no leaves in the water.
The cutting should have a healthy leaf node at the bottom. Don't leave a stub below the node. Place the cutting into the water, and place the container out of the sun. In a couple of weeks, you will see new roots beginning to form.
Check the water periodically to make sure it is still fresh. If it begins to smell, pour it out, clean the container, gently run water over the cuttings and put them in fresh water.
|Angel Wing Begonia rooted cutting|
Notice the long roots on the cutting on the right. Those little leaves grew under water!
Water well and let the water drain out. The soil will settle when you water. You may have to remake the hole and add more soil.
A few of these stem cuttings could or should be shorter, but they'll be OK. When they get settled in their pots and new growth emerges, I'll pinch it off to encourage branching and leafing out.
Even though their flowers are very pretty, Cane-like Begonias are grown mostly for their beautiful leaves. I keep pots on the kichen windowsill in the winter and in a shady seating area in the summer.
To keep your plants full and attractive, pinch off the top growth. Fertilize with half-strength houseplant fertilizer.
The photo on the right is the pan with two-types of Cane-like Begonia cuttings potted and ready to grow in the shed
There is a lot more to learn about Begonias at the American Begonia Society webpage - here.