Hello,
I am new to this forum ...but believe I can help
Adenium seed pods require about 70 days to mature ... after 70 days, the pods will begin to split open - within 5-7 days the hulls begin to turn themselves inside out ..... or outwards ...
To catch the seed ... those net like bags, that red potatoes or avocados come in work great
I have had seedpods from 3" to as long as 9" ...with an average around 5"
Seed pod shape resembles a fresh green-bean - color at maturity resembles speckled butter-beans or purple pea hulls ...or, multi colored
Hope that is helpful
James