When is the first day of flower
- Thread starter lerellion
- Start date
12/12 indoors. Summer solstice outdoors.
Light is what triggers flowers. Anything else to determine the start of flowering is arbitrary.
Light is what triggers flowers. Anything else to determine the start of flowering is arbitrary.
Y
Yankee Grower
No...Outdoors it is very much strain dependent. If you ever get a chance to run a lot of different strains outdoors you'll understand. You obviously haven't.
Duckmang
Member
The beginning of flower is pretty much irrelevant, it is the end of flower that you need to be concerned with. You may be watching the calendar but your plants are not. They will be ready ..... when they're ready. The trichomes tell all. Get a scope, 10X up to about 60X will do. Look at the trichomes once the plant has been flowering for a while (1mos+). Determine what concentration of clear, cloudy, and amber trichomes suits your needs. Harvest the plant when it reaches the proper contcenration previously determined. If you are keeping logs of the grow, count back until it was flipped 12/12 and record the legnth of the grow. The reason I suggest 12/12 flip is that if this is kept constant it won't bias the records if keeping logs.
G
grow nerd
Today I think.
the_red_bull
Member
That's kind of an arbitrary question by how we view time. It's like asking when the first day of veg is. Plants look at time in large blocks relative to us.
lerellion
Member
So what is the general concensus then.... When breeders list how many weeks flowering time is an average I am sure but it is a good place to start to determine nute lvls at what time of flowering. I just gave my 5 dose of nutes at 1250 ppm ( Sensi a+b, Big bud, Rhino, Bud Candy, and Budswel). With the strains I am running (Green House Seeds Super Lemon Haze , Green House Seeds Super Silver Haze, and Big Buddah Cheese.) and according to the breeder SSH is an 11 week strain, The SLH is also 11 week, however the Cheese is 9-10. I will need to adjust nute lvls to ramp down to 2 week flush, when to start Overdrive and use final flush.
So it is important (at least to me) when do you guys start counting flower so as to get a relativly aprox time until chop day.
The attached pics are from 4-17-10 (either day 23 or day 29)
Pic 1 = Cheese
Pic 2 = Super Lemon Haze (one of my fav pics)
Pic 4 = Super Silver Haze
Pic 4 = Super Silver Haze ( Very Very frosty
)
So it is important (at least to me) when do you guys start counting flower so as to get a relativly aprox time until chop day.
The attached pics are from 4-17-10 (either day 23 or day 29)
Pic 1 = Cheese
Pic 2 = Super Lemon Haze (one of my fav pics)
Pic 4 = Super Silver Haze
Pic 4 = Super Silver Haze ( Very Very frosty
)
S
Sirus
Nice looking ladies you got there! 
ISP_SmokeTrain
Member
I chose other. So, I'll explain. In my opinion, you're not flowering, until preflowers are showing easily. If you still need some type of magnification to see the hairs from your preflowers, you're not there yet. That's the start of true flowering. You can run light 12/12 from seed, but that does not mean you're in flowering mode. Some will agree, others will not. To each is his or her own.
lerellion
Member
Grew outdoors for 20 years. Never saw flowers before the sun flip. Some finished faster than others, which would be what flowering period refers to but, none ever started before the flip.
Huh?
Wow, why is everyone complicating this question?
For the past 20 years flowering to me and everything i have ever read and any grower i have spoken with on the boards has always been from the time you start 12 hours of darkness.
If you want overcomplicated useless information use the internet.
If you want some truth use your gut.
For the past 20 years flowering to me and everything i have ever read and any grower i have spoken with on the boards has always been from the time you start 12 hours of darkness.
If you want overcomplicated useless information use the internet.
If you want some truth use your gut.
A plant can NOT be flowering if it has NO flowers quite simply. If you suddenly decide to switch to 12/12 that is NOT the start of flowering (its only inducing the flowering cycle). Switching to 12/12 will start the plant on its flowering process thats around 7-10 days for males to start showing flowers and the females maybe up to 10-15 days to start showing gender under force flowering conditions.
17.2 Flowering
Male Plant
Under natural light, males usually start to flower from one to four weeks before the females. Where the photoperiod is artificially controlled, as with electric lights, males respond quickly (in about a week) to a change to short photoperiods and usually show flowers sooner than the females.
Male flowers develop quickly, in about one to two weeks on a vigorous plant, not uniformly. Scattered flowers may open a week or more before and after the general flowering, extending the flowering stage to about four weeks.
The flowering stage continues to demonstrate the male's tall, relatively sparse growth. Most of the flowers develop near the top of the plant, well above the shorter females. The immature flower buds first appear at the tips of the main stem and branches. Then tiny branches sprout from the leaf axils, bearing smaller clusters of flowers. The immature male flowers are closed, usually green, and develop in tight clusters of knob-like buds. The main parts of the male flowers are five petal-like sepals which enclose the sexual organs. As each flower matures, the sepals open in a radiating pattern to reveal five pendulous anthers (stamens).
Inside the ovoid, sac-shaped anthers, pollen grains develop. Initially, pollen sifts through two pores near the top of the anther; then, starting from the pores, longitudinal slits slowly open (zipperlike) over the course of a day, releasing pollen to the wind. Once a flower sheds pollen, it shortly dies and falls from the plant. Normally, male plants begin to die one to two weeks after the bulk of their flowers have shed pollen. Healthy males may continue to flower for several more weeks, but secondary growth seldom has the vigour of initial bloom.
Female Plant
The female plant generally starts to flower later than the male, under either natural light or an artificially controlled photoperiod. Female marijuana plants flower when the average daily photoperiod is less then about 12 to 13 hours. However, some varieties and individuals may flower with a photoperiod of over 14 hours. Some Colombian varieties may not respond until the photoperiod falls below 12 hours for a period of up to three weeks.
By E+B rose.
Male Plant
Under natural light, males usually start to flower from one to four weeks before the females. Where the photoperiod is artificially controlled, as with electric lights, males respond quickly (in about a week) to a change to short photoperiods and usually show flowers sooner than the females.
Male flowers develop quickly, in about one to two weeks on a vigorous plant, not uniformly. Scattered flowers may open a week or more before and after the general flowering, extending the flowering stage to about four weeks.
The flowering stage continues to demonstrate the male's tall, relatively sparse growth. Most of the flowers develop near the top of the plant, well above the shorter females. The immature flower buds first appear at the tips of the main stem and branches. Then tiny branches sprout from the leaf axils, bearing smaller clusters of flowers. The immature male flowers are closed, usually green, and develop in tight clusters of knob-like buds. The main parts of the male flowers are five petal-like sepals which enclose the sexual organs. As each flower matures, the sepals open in a radiating pattern to reveal five pendulous anthers (stamens).
Inside the ovoid, sac-shaped anthers, pollen grains develop. Initially, pollen sifts through two pores near the top of the anther; then, starting from the pores, longitudinal slits slowly open (zipperlike) over the course of a day, releasing pollen to the wind. Once a flower sheds pollen, it shortly dies and falls from the plant. Normally, male plants begin to die one to two weeks after the bulk of their flowers have shed pollen. Healthy males may continue to flower for several more weeks, but secondary growth seldom has the vigour of initial bloom.
Female Plant
The female plant generally starts to flower later than the male, under either natural light or an artificially controlled photoperiod. Female marijuana plants flower when the average daily photoperiod is less then about 12 to 13 hours. However, some varieties and individuals may flower with a photoperiod of over 14 hours. Some Colombian varieties may not respond until the photoperiod falls below 12 hours for a period of up to three weeks.
By E+B rose.
