Thinking She's browning to much...?

Hiya smokers this is my first grow and im on growing 4- 2 foot tall plants and im worried as im in the 4th week of flowering with 1 of them and about 2 to 3 weeks of flowering in the rest.
And this 1's pistols started going brown last week as soppost to i think lol. just there isnt much vegatation on her. She seems to be going more brown every day.. On the top she has'nt got any white pistols left and i was wondering why? Because on the botttom the pistols are bright white and are just starting to go brown an start buding.. I was wondering what people think i should do? thanks

Is there any chance she has been exposed to a mature male plant?..I'm not sure but she looks pollinated.

None of my other plants are male mate.. al female... What else would you think was the matter just al the pistols on the top are all brown and look burnt. I was thinking about cutting it off but dont really want to lol.... Gutted if it fuks up.. haha

Tammy&Glen said:

None of my other plants are male mate.. al female... What else would you think was the matter just al the pistols on the top are all brown and look burnt. I was thinking about cutting it off but dont really want to lol.... Gutted if it fuks up.. haha

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Dam, I'm not sure then. A more trained eye could help with this one. goud luck. Bump.