Plant shows sex on 18hrs

I have some plants that are vegging right now for 18 hours under a 400w MH bulb. I went into my grow room and noticed that some of the plants had sexed themselves they all were males. How and why did this happen? I thought plants only showed sex when they were under 12 hours of light?

when a plant is mature enough in veg it will show pre-flowers of sex. normal.

they will show sex but wnt flower until 12/12 mine have ben showing sex for a week now

autoflowering strain genetics... sometimes c.ruderalis (which flowers under any photoperiod) is bred into a strain to shorten flowering time. you may have unstable hybrids (or just autoflowerers)

Diesel Wreck said:

autoflowering strain genetics... sometimes c.ruderalis (which flowers under any photoperiod) is bred into a strain to shorten flowering time. you may have unstable hybrids (or just autoflowerers)

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who said anything about auto's? wait only you!

wiseguy316 said:

who said anything about auto's? wait only you!

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just cause no one said anything about it dosnt meant the guy dosnt have them why are you being such a prick?

well atleast now you can get rid of the males or move them into there own room. always a plus

A lot of plants will pre sex (show sex) At about 4 to 5 weeks into veg...Perfectly normal....

Thanks guys so can I leave them in the room or will the pollen sacks eventually open while still in 18 hrs?

from what people are saying that's normal (it's new to me, i don't veg that long), so i would venture to say no. a vegging male would not release pollen under 18 hour light unless, i reluctantly repeat, it has ruderalis genes

anyway you slice it a male = pollen = seads = shit so cut them down and start over!!

salsashark said:

just cause no one said anything about it dosnt meant the guy dosnt have them why are you being such a prick?

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just cause he isn't growing cabbage, or wait maybe he is, no one said anything about it, so it might be true.

I'm running my lights 20/4 and I just had a male show itself after 5 weeks.....all normal.