Very interesting. Thanks for the info!!!
We have a couple ladies outside. The soil was a mixture of about 3/4 veggy fertilizer and 1/4 coco coir. They have been in cloth pots for a couple months now without any additional vegetative fertilizer. Wasn't sure if they would benefit from any feeding.
Like you said you don't want to over feed, but at this point i'm wondering about them starving for nutes. They are also about as tall as yours.
How thick is the stem at the base for your ladies?