I transplant into fresh soil. Hopefully that'll restore the plant. The old soil was extremely saturated. I honestly don't know how as I watered once a week and this is a 5 gallon pot so I figure it doesn't need excessive water. And I started this plant 11/16. I did notice as I ran my fingers into the soil, the ammonia smell is not there anymore.Ammonia smell is pretty good indicator of saturated medium. As @Flexnerb indicated adequate drainage is crucial as is a light, fluffy, airy
medium providing plenty of oxygen pockets for root development. Your mix appears saturated and compact = the kiss of death.
Solution. plenty of perlite, elevate pots, air circulation and do not water too often letting medium dry between watering. Good luck.
I don't own a cat nor is it growing outsidesure a cat hasnt been at your plant
bad compost also smells of ammonia
also that looks like one those bags,did you by chance wash it first before use?some times they put a waxy barrier on them for some reason,those that i have used i washed them first,you could also have bad drainage as mentioned
Biggg agree. That lil baby would go weeks without needing watering in a 5 gallon! I always start in a 4in starter pot if you have seeds and after 2 weeks go to no more than a 3 gal pot! After a few weeks in that you can go up or flower!Start plants in smaller pots and then transplant up as they grow, much easier to control watering that way