Pot Might be Way too Tiny For Lime Plant

https://online-wiki.win/index.php/Every_little_thing_You_Need_To_Commence_Your_Own_Indoor_Backyard,_In_accordance_with_Industry_experts

My lime plant is gradually shedding its leaves. The new leaves are small and spherical, not like normal lime leaves. Is this as a consequence of too much fertiliser?