Brown stigmas from start

[Kundalini9]

Hello guys, i have this problem : i'm growing outdoor 3 critical jack (dinafem) and 1 sweet cheese (from sweetseeds) all in the ground. The SC is doing very very good at the end of 4th week with no problem but all three critical jack (week 1-2 of flowering) show only brown and short pistils. (i will upload some pic if needed)
Can someone help me with this ?
Thank u already

 

[zoo]

could be broad mites

 

[starke]

Need pics.