Critical Daddy Outdoor

Week eight, they are since the end of week 5 outside. Direct sun is doing really well. Until now I haven’t add any fertilizers (I’m a bit afraid of that), I have a soil from my friend, who has growing in that a champignons for years, so it’s organic and it contain mycorrhizae, but this year I’m growing in it for the first time, so I don’t know very much, how to work with it. She is in 12.5l Tex-pot. Average temperature is around: Day: 20-25 degree Celsius Night: 5-10 degree Celsius Over cold nights I’m putting nonwoven over her. Any advices? Let me know, i would be really grateful!