when to start lookin for males...?

i hav recently got my 1st grow room goin and was wondering when should i start lookin for the two different sexes, my little babies hav been growing from the seed for nearly 2 weeks now and are coming on wonderfully, i hav 12 of them jst now but i am starting to panic because everything is going well and i know the next stage will be getting rid of the males and being a noob to this doesnt help either, but i dont want my hard work going down the drain any advice would be really helpful.

 

Id keep an eye on them within the next week or two. males typically grow faster, and females "lean" towards them sometimes.

I assume u know the difference when looking @ their sexy parts?

 

not true.

they won't show sex until around the 5th week of veg, and even then it is tough to tell because the preflowers will be so small. the only definitive way to know is after you put them into the flowering stage (12 hrs of light/12 hrs of dark). after a week or two of 12/12, you will be able to tell for sure.

 

so shud i just leave them as they are and then bout 5th week look 4 the males then discard them?

 

yes, just leave them be. at two weeks you can't tell anything. wait until they start to develop some pre-flowers at the nodes. females will show tiny white pistols coming out at around 5 weeks or so if the growing conditions are right. if you can't see anything at that point, you can either wait longer for ther preflowers to show or put them into flowering. but honestly, most people won't conclude a plant is definitively one sex or another until they've been flowering for a week or two. judging only on pre-flowers can be risky.

 

thanks monstermann av jst transplanted 8 of my babies into bigger pots, my temp is stil runnin a bit high, its sitn bang on 85, wil this b ok sitn at that temp?

 

Yes.. it IS true.. grow a male and a female... quite common actually among plants. It's an indicator of sex.. which is what the OP is looking for... is it 100%.. of course not.

Anyhow.. with 4 weeks veg time you certainly can see male and female parts in MANY strains... and small... i guess that's relative. Again.. not all strains will show you sex before the flip.

Finally, 12/12 is the best way.. but a lot of people want to maximize veg time and also cull males if possible... it's not difficult to do but does take some practice to notice the difference.

Saying i'm completely wrong is also inaccurate.

 

ninfan i aint sayin ur wrng mate, everyone has different experiences on there own grow, i appreciate any info on the questions i am askin, different strokes for different folks, any info is much appreciated. my babies are at the 2 week stage, and hav jst been transplanted 2 bigger pots, so hopefully soon i wil b able 2 identify the males and get rid of them pretty quickly, and then i can concentrate on the rest of the crop. at 2 weeks my babies are bout 2" tall with 2ndary leaves growing, i hav a 600w hps sunmaster, plants are lookin nice and green, bn a noob at this, i think i worry 2 much bout how my babies are doing, hope all goes well, ps will get sum photos updated soon, cheers. :cheers2:

 

if it's not 100%, then it's pointless. no grower will cut down a plant simply because it is a little taller than the rest (assuming it's healthy of course). i have grown several plants, and i have yet to see any correlation. while i'm not saying it can't be true, the fact that it isn't 100% (as you have said) makes it irrelevant when deciding whether to give a plant the chop or not.

 

Agree t a point males plants do tend to grow tall and fast like rockets sometime and females shorter but more bushy but would I really cut 1 down on that bases alone, no i would.nt. Hmm interesting females grow or lean towards males sounds logical. Back to question anything over a month and ya might see signs but now ya've re potted the stress might make a few show and would guess they would prob be your fastest growers. But even if some do show u can still get hemi's later on down the line but as stated 12/12 only real way to be sure and if ya clonning only way of knowing the plants that yield the most and are worth keeping.

 

When you're running more than a few plants... it's notable to mark the possible males to identify and pull ASAP... more room in the garden then..

And when you've grown more than "several" monsterman... then try to insult my posts....

 

why would you pull a plant before you know the sex definitively? sure, marking or making mental notes seems logical. i do that too. and i understand you might want to make more room in the garden. but if you actually pull plants based simply on size, then you have wasted a lot of females. i'd rather keep my grow room slightly cramped for a couple extra weeks then pull possible females.

 

Imo ''if ya flip it round'' and say cut down all the slow growing and short plants ya can bet ya life ya gonna end up with all males. Must admit any tall plants I move away from the lights and give others a chance coz the odds would say there males. Definately gonna keep an eye on plants leanin or growing towards others next seed run i do.

 

im at the 3 week stage now, and the children are comin along fine, ive noticed sum are growing faster than others most of them seem 2 be quite bushy and not so tall, where as sum seem a bit taller but not as bushy, i hav noticed that the ones that are bushy seem 2 hav more leaves sproutn out them than the thinner and taller ones. where exactly is it u look for the sex of the plant? i hav been told from a friend u look at the very bottom 2 small rounded leaves in between there and the stem i shud b able 2 c either the 2 sacs bn the male or a fine yellow or white hair bn the female, i hav my magnifying glass, so hopefully that wil help spotting things a little bit quicker. any advice is apreciated bn my first grow.:hat:

 

You won't see sacks on a plant in Vegetative state yet... what you are looking for is the female and male preflower sex parts...

Google male marijuana and female too.. you'll find plenty of images.

 

Just 2 quick points grafter did you say the temp is 85 and ya've re potted at only 2 weeks?. Mid 70's the correct temp and only re pot after first month. The key to getting the most females as possible is to keep stress down especially in the first month or so.

 

thanx 4 that ninfan its gave me a good idea of wot im goin 2 b lookin 4 soon, i hav noticed some of them the edges of the leave are startin 2 curl up the way, maybe its its lack of magnesium, any ideas wot it cud b ? :cheers2:

 

rocklobster i didnt know that it wos better 2 leave them 4 a month b4 transplanting 2 bigger pots, the smaller pots i had them in 2 begin with the roots were dwn at the bottom of the pot so i thought it wud b better 4 them 2 go in2 bigger ones for better root and plant growth but hey im still learnin, will keep that in mind for the next time. im also finding it hard 2 contol the temp especially livin in the uk, temp is still sitn 85, and thats with the extraction running the whole time when the light is on and the fan, do u hav any ideas on how 2 drop temp, i hav only 1 vent which leads outside 4 the extraction so getn another extactor hooked up might prove 2 be vey difficult.

 

Could try having 1 sucking the air out near the lights and another pushing cold air in. 85 aint that bad really when ya plants get a bit older they can cope with the higher temps, that curling of ya leaves at the edges sounds like heat stress an extra bit of co2 or better venting will help them cope with that. If ya roots were touching the bottom and had a nice root mass then re pot but next time just use bigger pots 4-5 inch should see them through the first month.

 

i think it is heat stress coz the leaves r still green no yellowness shown, i moved the light up some more so its sitn bout a foot an a half away, hopefully this might prevent the curling of leaves if not, then i know i need better extraction. if i cant get better extraction how do i go about using co2 for them and how do i get it ? remember am a noob so no teasing please