Sexing at 1 month old ?
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Hackerman
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I believe that will slow down growth and you don't want that. I might take clones and sex those. Are they big enough to take clones?
Also, (and, remember, these books are not always exactly correct) from Steve Greens Grow Bible...
First Early Sexing Method:
If you have been growing the same strain and all the seeds at
the same time, then you may notice that some plants are taller than
others. This is a sign that the smaller plants are female and the taller
ones are male.
If you want too, you can separate your plants into two sections
in order to see how good your guesswork was when you do finally
identify sex. The other thing to know is that male plants in general
start to pre-flower before females. If you have taller plants that are
producing new growths before the smaller ones, then the taller plants
are probably male.
Second Early Sexing Method.
A good way to identify plant sex at early date is to look at the
calyx with the aid of a very fine magnifying glass. (See last page of
this book for pre-flowering/calyx illustration)
If the calyx is raised on a small short stem then it is probably
a male. If the calyx is not raised on a small short stem then it is
probably a female.
172
Third Early Sexing Method.
Force-flowering a cutting is probably the best early sexing
method out there. Simply take a cutting from the plant that you want
to sex and place the cutting in a cup of water or into a cloning medium
such as rockwool. Give the cutting 12 hours light and 12 hours total
darkness. The cutting will flower and display its sex. Clones will carry
the exact same genetic make-up as the plant it came from, including
sex.
And from Ed Rosenthal's Marijuana Growers Handbook...
Chapter Twenty-Six - Sinsemilla and Sexing
The word "sinsemilla" is derived from the two Spanish words ''sin'' and ''semilla'' meaning
respectively ''without'' and ''seed''. Connoisseurs prize sinsemilla partly because the marijuana
has a greater potency and a more intense aroma than seeded marijuana, and partly because of
its enhanced appearance. In order for the flowers to ripen unseeded, they must remain
unpollinated (unfertilized). Male and female flowers usually appear on separate plants. The
males are removed from the space as soon as they are recognized. This should be done early in
the male plants' development, before any large flower clusters appear. Even a single open flower
cluster can release enough pollen to fertilize thousands of female flowers. Males can be detected
early by carefully examining the space where the leaf joins the stem (internode). Before the plant
begins to develop flower clusters, a single male or female flower will sometimes grow in the
internode. A male flower will have what looks like a bulb growing from a thin stem, and at the
bulb's end there will be a curved protrusion that looks something like a little bent finger. A female
flower will usually have two antennae-like protrusions jutting out. Sometimes a sexually
indistinguishable flower appears. The females' leaves begin to grow closer together, forming a
strong stem which will hold the clusters of flowers and later the ripening seed. Any plants which
have not indicated are watched closely, and the females are watched for any signs of
hermaphrodites. These plants are primarily female but they produce some fertile male flowers.
This may consist of only a few clusters, an entire branch or, occasionally, males - throughout the
plant. These plants are dangerous in any sinsemilla garden. Even a small cluster of flowers can
ruin entire colas of buds. Either the male flowers should be removed and the plant checked daily,
or the plant should be remov- ed from the garden, which is the safest course of action. There are
several methods used to sex plants early. Since mari- juana flowering is regulated by the number
of hours of uninter- rupted darkness, it is easy to manipulate the plant's flowering cycle. Young
plants can be forced to indicate by putting them under a long night regimen. The plants will begin
to indicate within a few days and after 10 days, fast growing plants should have clearly defined
flowers. Once the plants indicate, the males can be separated from the females, and the garden
can be returned to the vegetative growth cycle simply by changing the light regimen back to the
long day/short night. Putting the plants through an abbreviated flowering cycle sets them back
several weeks. First, their growth is stopped and then it takes them some time to start growing
again. Some growers feel that the plants lose a bit of vigor in the process. To eliminate stresses
in the garden, a clone can be taken of each plant. The clones should be tagged to denote plant
of origin and then placed in water or rooting medium under a long night/short day en- vironment.
The clones will have the same sex as its clone parent, so the clone parent's sex is determined
before the plant is out of the vegetative stage. The female clones can be continued under the
flowering regimen and will provide a taste of the clone-parent's future buds. Within a few days of
the change in the light regimen to a long night, the plants begin to show changes in their growth
patterns. First, their rate of growth, which might be as much as 2 inches a day during the
previous cycle, slows and stops. Next the plants begin to differentiate.
The males elongate upon ripening so that their flower sacks, which contain copious amounts of
pollen, tower above the females. Marijuana is normally wind-pollinated. The females start to
grow stocky stems with shorter nodes be- tween the leaves. The number of fingers on the leaves
decreases and the plant may revert from opposite leaves to a pattern of leaves alternating on the
stem. Within a few weeks, large numbers of pistils (the white anten- nae) will form along the stem
and on the tops of the branches. If the flowers are fertilized, the pistils will start to dry up,
beginning at the tips. Each fertilized flower produces a seed. Such formation, which commences
upon fertilization, is apparent by the third day. The ovary at the base of the pistil swells as the
new seed grows inside of it. As long as most flowers remain unfertilized, the plant con- tinues to
produce new flowers. The clusters get thick with the unfer- tilized flowers over a period of several
weeks. Then the flowering pattern begins to change. The pistils begin to wither, similar to the
way pistils of fertilized flowers do and they begin to dry while at the same time changing color.
Next, the calyx (ovary) begins to swell. There is no seed developing inside the calyx; it is a sort
of a false pregnancy. When the calyx has swelled, the cluster or cola is ripe and ready to be
picked. The pistil's color is a factor of genetics and temperature. Some plants, including many
indicas, naturally develop a purplish color. Many indicas and most sativas develop a red color.
However, the color may change to purple or become more pronounced if the roots are subjected
to a cool environment, below 55 degrees. The growing flowers develop glands over their outer
surfaces. Glands also develop along the small leaf parts surrounding the flower. These are
unlike the glands found on the immature plant, the sun leaves, and the stem. The earlier glands
were either con- nected directly to the plant, usually along the stem or had a small one-celled
stalk connected to the head which filled with can- nabinoids. The new glands have a longer stem
which supports a larger head. The head is a membrane that fills with cannabinoids. The analogs
of THC produced in the different types of glands may vary. When the gland first appears the
head is small but it begins to swell and looks like it might burst. Given any stress it will. Usually
the head is filled as the plants go into the last stage of flowering, as the ovaries begin to swell.
This is usually when experienced growers pick the buds. Researchers, scientists, and gardeners
have debated the pur- pose that THC serves to the plant. THC and the water-soluble compounds
which impart the taste and aroma to the flowers act as an anti-bacterial agent, and repel
some insects. They also repel most other animals including mammals and birds. (Remember,
we are talking about a mature plant, heavy with resin.) This is not uncom- mon in plants. To
assure that the seed is viable and not destroyed before it matures, the plant puts out a powerful
array of chemicals to thwart predators. Once the seed matures, it is palatable to these creatures.
This is one of the ways that the plant spreads its popula- tions without human help. Animals and
birds eat the seeds, an oc- casional seed passes out of the animal's system unharmed, allowing
the species to colonize a new location. Once the calyx swells, the glands begin to change color.
The THC in the head was previously a clear liquid. When the calyx is getting a little overripe, the
gland head tints an amber shade. This indicates that the THC is beginning to degrade into two
other can- nabinoids, CBL or CBN, which are not nearly as powerful as THC.
Also, (and, remember, these books are not always exactly correct) from Steve Greens Grow Bible...
First Early Sexing Method:
If you have been growing the same strain and all the seeds at
the same time, then you may notice that some plants are taller than
others. This is a sign that the smaller plants are female and the taller
ones are male.
If you want too, you can separate your plants into two sections
in order to see how good your guesswork was when you do finally
identify sex. The other thing to know is that male plants in general
start to pre-flower before females. If you have taller plants that are
producing new growths before the smaller ones, then the taller plants
are probably male.
Second Early Sexing Method.
A good way to identify plant sex at early date is to look at the
calyx with the aid of a very fine magnifying glass. (See last page of
this book for pre-flowering/calyx illustration)
If the calyx is raised on a small short stem then it is probably
a male. If the calyx is not raised on a small short stem then it is
probably a female.
172
Third Early Sexing Method.
Force-flowering a cutting is probably the best early sexing
method out there. Simply take a cutting from the plant that you want
to sex and place the cutting in a cup of water or into a cloning medium
such as rockwool. Give the cutting 12 hours light and 12 hours total
darkness. The cutting will flower and display its sex. Clones will carry
the exact same genetic make-up as the plant it came from, including
sex.
And from Ed Rosenthal's Marijuana Growers Handbook...
Chapter Twenty-Six - Sinsemilla and Sexing
The word "sinsemilla" is derived from the two Spanish words ''sin'' and ''semilla'' meaning
respectively ''without'' and ''seed''. Connoisseurs prize sinsemilla partly because the marijuana
has a greater potency and a more intense aroma than seeded marijuana, and partly because of
its enhanced appearance. In order for the flowers to ripen unseeded, they must remain
unpollinated (unfertilized). Male and female flowers usually appear on separate plants. The
males are removed from the space as soon as they are recognized. This should be done early in
the male plants' development, before any large flower clusters appear. Even a single open flower
cluster can release enough pollen to fertilize thousands of female flowers. Males can be detected
early by carefully examining the space where the leaf joins the stem (internode). Before the plant
begins to develop flower clusters, a single male or female flower will sometimes grow in the
internode. A male flower will have what looks like a bulb growing from a thin stem, and at the
bulb's end there will be a curved protrusion that looks something like a little bent finger. A female
flower will usually have two antennae-like protrusions jutting out. Sometimes a sexually
indistinguishable flower appears. The females' leaves begin to grow closer together, forming a
strong stem which will hold the clusters of flowers and later the ripening seed. Any plants which
have not indicated are watched closely, and the females are watched for any signs of
hermaphrodites. These plants are primarily female but they produce some fertile male flowers.
This may consist of only a few clusters, an entire branch or, occasionally, males - throughout the
plant. These plants are dangerous in any sinsemilla garden. Even a small cluster of flowers can
ruin entire colas of buds. Either the male flowers should be removed and the plant checked daily,
or the plant should be remov- ed from the garden, which is the safest course of action. There are
several methods used to sex plants early. Since mari- juana flowering is regulated by the number
of hours of uninter- rupted darkness, it is easy to manipulate the plant's flowering cycle. Young
plants can be forced to indicate by putting them under a long night regimen. The plants will begin
to indicate within a few days and after 10 days, fast growing plants should have clearly defined
flowers. Once the plants indicate, the males can be separated from the females, and the garden
can be returned to the vegetative growth cycle simply by changing the light regimen back to the
long day/short night. Putting the plants through an abbreviated flowering cycle sets them back
several weeks. First, their growth is stopped and then it takes them some time to start growing
again. Some growers feel that the plants lose a bit of vigor in the process. To eliminate stresses
in the garden, a clone can be taken of each plant. The clones should be tagged to denote plant
of origin and then placed in water or rooting medium under a long night/short day en- vironment.
The clones will have the same sex as its clone parent, so the clone parent's sex is determined
before the plant is out of the vegetative stage. The female clones can be continued under the
flowering regimen and will provide a taste of the clone-parent's future buds. Within a few days of
the change in the light regimen to a long night, the plants begin to show changes in their growth
patterns. First, their rate of growth, which might be as much as 2 inches a day during the
previous cycle, slows and stops. Next the plants begin to differentiate.
The males elongate upon ripening so that their flower sacks, which contain copious amounts of
pollen, tower above the females. Marijuana is normally wind-pollinated. The females start to
grow stocky stems with shorter nodes be- tween the leaves. The number of fingers on the leaves
decreases and the plant may revert from opposite leaves to a pattern of leaves alternating on the
stem. Within a few weeks, large numbers of pistils (the white anten- nae) will form along the stem
and on the tops of the branches. If the flowers are fertilized, the pistils will start to dry up,
beginning at the tips. Each fertilized flower produces a seed. Such formation, which commences
upon fertilization, is apparent by the third day. The ovary at the base of the pistil swells as the
new seed grows inside of it. As long as most flowers remain unfertilized, the plant con- tinues to
produce new flowers. The clusters get thick with the unfer- tilized flowers over a period of several
weeks. Then the flowering pattern begins to change. The pistils begin to wither, similar to the
way pistils of fertilized flowers do and they begin to dry while at the same time changing color.
Next, the calyx (ovary) begins to swell. There is no seed developing inside the calyx; it is a sort
of a false pregnancy. When the calyx has swelled, the cluster or cola is ripe and ready to be
picked. The pistil's color is a factor of genetics and temperature. Some plants, including many
indicas, naturally develop a purplish color. Many indicas and most sativas develop a red color.
However, the color may change to purple or become more pronounced if the roots are subjected
to a cool environment, below 55 degrees. The growing flowers develop glands over their outer
surfaces. Glands also develop along the small leaf parts surrounding the flower. These are
unlike the glands found on the immature plant, the sun leaves, and the stem. The earlier glands
were either con- nected directly to the plant, usually along the stem or had a small one-celled
stalk connected to the head which filled with can- nabinoids. The new glands have a longer stem
which supports a larger head. The head is a membrane that fills with cannabinoids. The analogs
of THC produced in the different types of glands may vary. When the gland first appears the
head is small but it begins to swell and looks like it might burst. Given any stress it will. Usually
the head is filled as the plants go into the last stage of flowering, as the ovaries begin to swell.
This is usually when experienced growers pick the buds. Researchers, scientists, and gardeners
have debated the pur- pose that THC serves to the plant. THC and the water-soluble compounds
which impart the taste and aroma to the flowers act as an anti-bacterial agent, and repel
some insects. They also repel most other animals including mammals and birds. (Remember,
we are talking about a mature plant, heavy with resin.) This is not uncom- mon in plants. To
assure that the seed is viable and not destroyed before it matures, the plant puts out a powerful
array of chemicals to thwart predators. Once the seed matures, it is palatable to these creatures.
This is one of the ways that the plant spreads its popula- tions without human help. Animals and
birds eat the seeds, an oc- casional seed passes out of the animal's system unharmed, allowing
the species to colonize a new location. Once the calyx swells, the glands begin to change color.
The THC in the head was previously a clear liquid. When the calyx is getting a little overripe, the
gland head tints an amber shade. This indicates that the THC is beginning to degrade into two
other can- nabinoids, CBL or CBN, which are not nearly as powerful as THC.
R
Rosebud
Guest
yes.
T
The Hemp Goddess
Guest
I think it is really tough on your plants to put into 12/12 to sex and then put back into veg to keep growing. I would estimate that if you put your plant in flowering to sex and then back into veg, it will cost you at least 3 weeks "growth time"--time it would have been growing and probably showed you its sex naturally. Taking a couple of cuts and putting those in flower is the probably your best idea if you thing you want to try and sex them now. However, they will not show until they are regardless.
And I can say in that all my many years of growing, I have found absolutely no way to tell the sex of a plant by its growth pattern in veg or minutely examining the growth at the internodes. I have had a whole lot of males that were taller than the females and a whole lot of males that were bushier than the females. The sure way is to see pre-flowers.
And I can say in that all my many years of growing, I have found absolutely no way to tell the sex of a plant by its growth pattern in veg or minutely examining the growth at the internodes. I have had a whole lot of males that were taller than the females and a whole lot of males that were bushier than the females. The sure way is to see pre-flowers.
BenfukD
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buddogmutt
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The answer to your question is yes, next time raise them on 12/12, when they show sex, then switch...instead of veg for birth,flower for sex,veg for growth.......it's just a sexing cycle of 12/12 and then a veg...less stress on the plant and cut down a lot of the transition time.
Easiest way is to take a cut and put that into 12/12. It will show sex, if taken from a sexually mature plant, even without roots. This way you don't have to have any setback on your growth. Like THG said, flipping the whole plant will trigger hormones and then flipping it back will stop those hormones. Valuable veg time will be wasted. jmo
