The life cycle of auto flowering cannabis.


Life’s a garden… dig it.
Dec 3, 2017
Currently Smoking
whatever burns
Thanks alot. Just wanted to know if its ok to mix nutes or to just switch over..
Last edited:


Auto Warrior
Mar 10, 2014
Currently Smoking
Zombie Kush
I think it is a different story when you Grow with Organic Nutes. For Biobizz Growers they run in deficiencies when they start Bloom when Strech stops. Biobizz told me on Autoflowers i need to Add Bloom Nutes after 3 Weeks because the organic stuff needs time in the Soil.
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Frankensteins Lab Leader
Dec 15, 2013
Northern USA
No need to dumb it down, you just need to step up the nutes you use! I recently switched to Megacrop, an all in one nutrient designed for cannabis. They even tell you on their site that you need to add Nothing! and you can get a free sample. No more chemistry set and 44 bottles of watered down, over priced nutrients and phony ( bud enhancers" etc ). Check around, several people here are using it.

My plants look great IMO.

Indica 639 pic1 -2-18-2018.jpg

Could you dumb it down a little? Transition nutes??


Auto Warrior
Dec 15, 2016
very informative, cheers!
Or a
I do not have much growing experience, I started my first grow 18 days ago (8 autos hps400w) but after all that I have read about growing, autoflowers, autoflowers generations, ruderalis, indica, sativa, feminized, etc etc... this cycle of life makes no sense, I do not say it does not work, I know it works but does not make sense.

If I want to grow a plant for 12 weeks (120 days) I will choose feminized seeds:

. I will get more stable genetic
. I will get genetics without ruderalis
. I'll get strains with more THC and CBD
. I will get a greater harvest
. Flowering is made on 12/12 cycle saving a fortune in electricity consumption

If I grow autoflowers is because they have a rapid life cycle (60 to 80 days), if the idea is to have the maximum possible harvest I will always choose feminized, if I choose autoflowers is because the idea is to harvest as fast as possible, if I want to have a greater harvest with my autoflowers I give them more light, lots of light instead give them more 60 days of 18/6.

I could be wrong but after everything I read in the last two months I can only reach this conclusion.
And not forgetting you can also have a nice perpetual grow (every 2 weeks or so)
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Auto Warrior
Dec 10, 2017
Currently Smoking
So much knowledge in this thread, thanks to all and especially @Muddy - bring me my Champagne & Reefer

Yeah bring me champagne when I'm thirsty.
Bring me reefer when I want to get high.
Yeah bring me champagne when I'm thirsty.
Bring me reefer when I want to get high.
Well you know when I'm lonely
Bring my woman set her right down here by my side.
Well you know there should be no law
on people that want to smoke a little dope.
Well you know there should be no law
on people that want to smoke a little dope.
Well you know it's good for your head
And it relax your body don't you know.
Everytime I get high
I lay my head down on my baby's breast.
Well you know I lay down be quiet
Tryin' to take my rest.
Well you know she done hug and kiss me
Says Muddy your one man that I love the best.
I'm gonna get high
Gonna get high just as sure as you know my name.
Y'know I'm gonna get so high this morning
It's going to be a cryin' shame.
Well you know I'm gonna stick with my reefer
Ain't gonna be messin' round with no cocaine.

Be well, be blessed and be medicated...


Sep 17, 2015
simple, auto finishes stretch then switch to bloom nutes. no more veg feed. just switch to bloom, and calmag is a must keep ya girls super happy. happy growing every1;)
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Apr 19, 2018
Currently Smoking
Another common question I see is when to switch autos from veg to bloom. Many people are under the impression that as soon as they see the first flowers it's time to switch. Perhaps a little explanation of the life cycle of autos will help to clarify this.

Weeks 1 - 3. Once you've started your seeds and they break the surface of the soil, they are in their seedling stage. The first set of leaves to appear will usually single fingered, followed by a second set that may still be single fingered or perhaps 3 fingered. Once that second set appears growth will start to accelerate as the new leaves provide more photosynthesis. This process will continue, more new leaves, faster growth. Depending on the type of soil in use, mild vegetative nutes can be introduced at week 2. By week 3 most plants will start to show their sex. Males will start to produce pollen sacks and females will display pistols.

Weeks 4 - 6. The plants are now entering a pre flowering stage. During this time the plants should exhibit explosive growth, often as much as a new set of nodes and 1" vertical growth a day. This is the time when they will gain most of their vertical height. Many people make the mistake of switching from vegetative to flowering nutrients at this point, assuming that since they see flowers it must be the proper time. This is incorrect. If the switch to flowering nutes is made at this time the vertical growth will stop and the plant will put it's energy into producing buds. If you need to keep your plants small, or want them to finish earlier, they by all means switch nutes at this point. But if you want to get the most out of your plants continue feeding vegetative nutes until you see the vertical growth slow and stop. Depending on the strain that will usually be sometime during week 5 or 6.

Weeks 7 - 9. By now vertical growth has stopped and the switch to flowering nutrients has been made. The buds will start to fill out and put on weight, becoming hard and tight. Pistols will start to change from white to brown, orange, red, etc. By now the plants will also have developed a strong smell. Toward the end of this phase the large primary and smaller secondary fan leaves will begin to turn yellow. This is an indication that the plant is moving toward the end of it's life.

Weeks 10 - 11. At this time flowering nutes should be discontinued and only plain pHed water fed to flush the remaining nutrients from the soil and improve the taste. Yellowing of the fan leaves will continue as the plant draws the stored energy from them. Eventually they will die and fall off. By the time that the smaller leaves that come from out of the buds will also start to turn yellow. Then it's time to harvest.

I know that many of you are thinking that the seed bank said the plants will finish in 8-9 weeks, so why are you saying they take 10-11? The claims made by the seed banks are somewhat deceptive. If you switch to flowering nutes at week 3 or 4 the plants can finish in the times the seed banks say but they will remain small and not reach their full potential yield. Years of growing by myself and others has shown that autos do best if you follow this time line.

Of course, there will always be variations depending on the strain, the environment, nutrients, etc. This information is meant to only serve as a general guideline.

For more detailed information on when to harvest your plants, please see:

NOTE: This is an informational thread. Do not post specific questions about your grow here. Please start a new thread in the appropriate forum.
And its going to take a total of 98 days for my blueberry auto outdoors