I’ve Grown A Lychee From A Sprouting Seed Now 2foot Tall And The Bottom Leaves Get Brown Spots, Go Yellow And Fall Off. Why?

Question

Hi, I’m in Leicester UK and the seed sprouted, so I potted it, and kept it inside, it grew so I re-potted it and put it outside, It’s been repotted again and is about 4 years old, the new leaves grow, but the older leaves at the bottom get brown spots turn yellow and fall off. I don’t know why. Please can you let me have your opinion as to why this is happening.

Answer 1

This article should help:
https://www.gardeningknowhow.com/ornamental/trees/lychee-tree/manage-lychee-diseases.htm