Avocado tree + brown leaves
My mom is attempting to grow an avocado tree (purchased in pot & planted in May). Unfortunately, the leaves are turning brown. I've not a green thumb, but a look at the soil appears that there's a drainage problem (damp, weird rotten egg smell, looks green!).
Curious if my suggestion to reduce watering frequency/amount and to add some better soil to aid in drainage/absorption is on the right track?
Thanks in advance,