I have never used any VGI, I haven't had a really huge donkey ear growth, but I've certainly seen this growth pattern in late flowering.

Pic 1: Blueberry; still has 2 weeks to go and already starting to see some "Donkey Ear" growth.

Pic 2: Is from my last run of Durban poison, there's a little bit of something happening near the tip of the bud, but not so sever. :wtf: