i THOUGHT1-14-13 is fertilizer,but it looks like is not.
It must be too much water,or lack of drainage,just like ,other posters indicated.
mayson - When the plant is getting larger,you start by applying Osmocote in small quantities,for the first year,second year let the plant grow roots in ground and forget about fertilizer.
If you can't,let it grow in ground the smallest Fertilizer regimen should be used,but I will not say how much not to have you Burn and kill the plant and say I told you so.