Hello, need some help with my gardenia bonsai that I've been taking care of in about 3 years.
I've been feeding it with bio gold fertilizer only. And it's been doing great but now for some reason it's started to get some yellow leaves in the interior of the branches. Do not know if it's not enough light penetrating or if it's because it's fall season right now. Do not remember this was the case last fall. So anyone with gardenia experience that know if it's supposed to be this way or it's lacking any nutrients like iron?
Thank you