what is the best way to propagate a dieffenbachia?

The only technique I know of for these is air-layering.
Hopefully if there is another way, someone will pop in, 'cuz I'd like to know too.

And aahzanadu!

Well, how about this... Dieffenbachias (Dieffenbachia)
Found this in our Database. Though I've never seen a Dieff. bloom, and produce seed.

Air-layering certainly is a good option and it should be very safe .

If you desire more plants you could try taking stem cuttings around 3-4 inches long. It's important they aren't to short. Remove all of the leaves from these pieces if there are any present. Place the pieces laying on their side, just half buried in a lightly moist rooting mix. Put these in a mini greenhouse or similar as per usual. This will take a long time if I recall correctly. It should look like this image I found on the net: http://gardentia.net/?attachme...

Be sure to ventilate the greenhouse every day.

That said it was a very long time ago since I done this, but it should have a reasonable success rate, perhaps also depending on the cultivar, as some will be easier to succeed with than others. Good luck!

Ah, very interesting! I can see where this technique could work with others as well. Maybe for example, my Chinese Evergreen, Aglaonema.

May have to give it a go! Thanks William!

I once rooted a small stem cutting in water, and it did get roots within 3 weeks. If you have a decent size plant try different methods, I'll be following your post