Stubborn Offsets

[Jim McClements, Dover, DE z6]

I asked about this recently on the list but no one responded. I'll try again
in a different way!

Today I unpotted 4 nice-sized tubers of A. taiwanense to refrigerate them
after a period of growth under lights. They are a creamy white color and
appear healthy. Also in the pot, not attached to the tubers, were 8
dark-colored offsets and one smallish cream colored offset.

My experience up to now has been that the small dark offsets of this and
several other species are reluctant to start growing, even after one or more
cold treatments.

1. Has anyone else experienced this?
2. Any ideas on how to "jump-start" these offsets?

With some others, I've finally given up and planted them outside, but it's
too soon to know the results.

If no one posts a response, I'll assume that no one on this list of experts
has any knowledge of this, and I'll plan a PhD thesis on the subject!

Jim