Ming Aralia and Black Aralia trunk fattening
I have a Ming and a Black Aralia (in their own respective pots) and I'd like the trunks to fatten up...they're currently pretty slim but quite tall, approximately 4-5 feet tall. What can I do to fatten up the trunks?
Proper care and growing conditions will result in the older growth becoming woody on your plants.
There is no real way to speed up or increase the trunks of your plants.
Here are some links with more information on care.