I have not tried this. It has double compound leafs and the leaflets are rather large. I do not know if this would work well, Im thinking on an aesthetic angle rather than the ability to get it to grow in a small pot.

Hi Bill, I guess I am not as concerned with keeping it as a true bonsai. I do want to keep it containerized & to develop a canopy, though I am sure that reducing the leaf size will be troublesome. I am mostly interested in getting the tree to flower & possibly fruit from its pot. I am thinking I will eventually have it in about an 18 inch, 10 gallon or so pot.

-Ray-

Hi
Have not tried that particular species but have tried several other "giants" with mixed results. Though I managed to keep them under 8 feet they never flowered at the dwarfed size. Among the types I tried .
Delonix regia .Colvillea racemosa .Jacaranda mimosifolia.
Most disapointing was the Delonix, supposedly a white form that I started from seed. I recently planted it in a neighbors yard to see what happens. Have over 10 years in it without a single flower. I suspect it's permanently stunted as I have watched others planrted normaly ,flower within 5 years.
The sausage tree would make a spectacular dwarf for sure but even at 10 percent normal would still be very large lol gary

In my home country, Zimbabwe/Rhodesia. Kigelia pods are made into an ointment and is used for trating skin cancer and moles.