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Marijuana Flowering

Marijuana Flowering

If you want your marijuana plants to start pre-flowering just change the light cycle to 12 hours on and 12 hours of complete darkness. This convinces the plant that the days have got shorter and now is the time to flower.

Why does this work, well let's think about how plants are in their natural environment. Marijuana like most plants start off growing from seeds in early spring, then go through their vegetative stages in the later stages of spring and all of summer and when fall comes and the days start to become shorter during fall/autumn there is less light and more darkness and this triggers the plans to flower, or bud. So when you are growing indoors professional growers move from a 24 or 18 hour vegging light per day to 12 hours on and 12 hours off.pre-flowering female marijuanaAlthough, while waiting for marijuana to flower can seem to take forever, once your plants truly enter the flowering stage their growth rate can be stunning. Growth patterns and nutrient cycle timing and requirements will change. The vigorous vegetative growth will slow, stems will elongate and flower formation will begin rapidly at first before slowing. If you are growing hydroponically you should now be using a bloom or flowering mix of hydroponic nutrients. If you are growing in soil you should add a fertilizer that is high in phosphorous and potassium such as ‘Super Bloom’. Read more about marijuana nutrients.Whilst in the flowering stage it is important that plants receive no light outside of their 12 hour day cycle. Any light received can confuse and stress plants leading to abnormal growth. Make sure the room is light tight. More information on marijuana lighting.
  1. Note that less than 12 hours light will reduce flowering speed and overall yield.
  2. Note that putting the lights on during the 12 hour dark period a number of nights in a row, even for a few minutes can revert the cannabis back into its vegetative growth cycle.
  3. Trick you can use a green light bulb in the grow room to help you work while the cannabis is in darkness. Green light will not affect the plants.
  4. Trick some growers will give their babies a full 36 hours of darkness to send the message that flower must begin. This usually decreases the time in which flowering begins.

These days you can also buy auto-flowering marijuana seeds that will start to flower after a certain number of weeks.

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111 thoughts on “Marijuana Flowering

  1. Charlene says:

    Can you grow Marjuana in water or does it have to be potted in soil, first time project for me, got plant In pod in a base with water and nutrients and it has 5 leaves on it, which I believe is a female. Got plenty of leaves and stuff growing under leaves, flowers are getting dry, why? Shouldn’t they be green and soft. Bottom part plant leaves droop but rest is ok. Is this normal, but also need to know if they need to be in soil, or will just water do, got lots of roots.

  2. Alfabeti i gjuhës shqipe says:

    We forgot our seeds on water and they started growing. Now they have leafes. What do you think I should do?

  3. Cronk says:

    Hey, Ive been going now for a little over a month switched me Lights over to 12/12… I can’t seem to see any hairs on all four of my pants yet they have been in flower for a week now but I am getting something but doesn’t look like male I don’t think and I don’t think it looks female

  4. rouelibre says:

    One good trick for the flowering stage is to have pure green LEDs around the place. A strip of tape LEDs(sold for fun purpose and/or decoration)will do. You know, the cheap stuff comming in reels and powered by a simple class III wall wart. Why?

    If you use “full spectrum” or any other kind of pinkish kinda light, turning-on the green lights will give you a better natural light to inspect your crop during the “on-time”. And, during the sleep or “off-time”, the green light will let you see without disturbing them. My 2¢.

  5. Scott says:

    I need your guyses help my plant leaves are drying up turning yellow and I think I over water is there any way to save it?

  6. I have used bloom in veg state and still on 18/6 as had nothing else to use will harm my plants

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