I’ve had it in the ground for a few years, its shown very poor growth so far. Puts out a few flowers every year, but no fruit. Most of the leaves seem to succumb to something by summertime. Even if I spray for insects, I get die back like this happening:
I think it has fireblight, and I would replace it. Unless you’re particularly fond of GS you can find recommendations for fireblight resistant varieties here and elsewhere.
I agree with marknmt, looks like FB. I get rid of FB trees ASAP. I do not want that FB to spread throughout the rest of my orchard. Better safe than sorry. I tried cutting FB out of some trees over the years but it seemed to not help to stop it.
Thanks a lot guys. That’s too bad. Granny Smith is my favorite apple, and you can’t buy it here in Japan. This is my only Apple tree.