Hello Everyone,
First let me thank those who answer questions patiently with the aim of passing on knowledge to those less knowledgeable.
I am new to bonsai so please correct me if needed. I picked up a Nana from a large box store a few months ago to use as a Frankenstein tree, to practice air layering and different forms of grafting, etc (cant wait for winter to be over). I recently noticed brown spots on the ends of the current years growing branch tips, only on the current years growth not past the point of woody growth. checked online but could not find satisfactory pictures to definitively rule on what it is. There are no signs of insect infestation that I can see. The tree is four feet tall, and in the original pot that it was purchased in.
I have clipped off the tips of the affected branches into the woody growth making sure to clean my tool after each cut just in case it is spreadable . Haven't joined a club yet due to my horrible work schedule, so I figured I would pose my question here. Thank you in advance to anyone who can help, I'm sure someone out there knows what this is.