Auto Blue Kush browning pistlis at 4th week

Akumetsu001

New Member
Hi everyone, i'm growing 2 auto northern light 5-6 weeks old that are totally fine and one auto blue kush from a dinafem seed (everything outdoor). It's 4-5 week old plant and some pistils are already turning brown. It's my second time growing weed so i'm trying to understand if it is a overfeeding problem, heat or wind stress or something like this. It is not a so diffuse problem to the plant, many bugs are totally fine, but the tip's pistils are already browning and if this is a problem i want to solve this asap. Moreover internode calyx are fatting, broking one of them i found a "false seed". It can't be a pollinating problem, no male flowers anywhere and the other two are totally fine. photo below of the tip, some buds with the problem and one fine young bud
 

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