New Grower The life cycle of auto flowering cannabis.

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: https://www.autoflower.org/f44/when-harvest-autos-your-leaves-will-tell-you-4889.html.

NOTE: This is an informational thread. Do not post specific questions about your grow here. Please start a new thread in the appropriate forum.
 
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Thanks to everyone for the kind words.
 
I think that the info Muddy gave is very good advise for pots where there is no nutrient tank.

I think the main fact with autos that the same light schedule can be used from beginning to end changes the options that one has.

Because the light ramains the same light wise you can have babies growing right beside adults about to be harvested.

There is a potential to grow harvesting plants along with babies. I can grow in a non stop cycle. My Grow style Besides being dee[ water tank with air bubbles is SOG my plants are close together. The single colon pheno works best for me. I am one hundred percent auto in the tank.

Unless you are using all femmed seeds you will have to replace the males that occur. This makes plants in the tank after about 3 months of all different ages. Some plants harvest at different times even if they were the same type. Different phenos within the same variety may take different harvest lengths as the phenos do make a big difference. Typically the shorter phenos are ready quicker than the tall phenos.

What are the disadvantages. Well the main one is that you have to use the same nutrients from beginning to end and with no flushing. So far I have not seen this make much difference.
I get good bud groth. I think the bud groth would be better if I could change but I can't so what the hell.

The advantages are obvious. I get some pot to harvest every week. Clipping is spread out. I think this constant rotation gives the best bud weight per growing volume of the tank and lighting of any other method I have tried.

I take out 2 litres of water from the tank daily. When I have outside plants I dump it on them, they like it. In the Winter I just dump it on the ground. I do this to partially remove fertilizer salts from building up. I usually have to add 4 litres of water every day. About 2 litres a day evopate from the plants. I feed twice a week and trie to keep my PPM at about 700. Does this hurt the babies with their first leaves the answer is it doesn't seem to as I only lose about 1 in 59 after they hit the tank. I try to keep my pH at 6.0 to 6.2.
 
Muddy.... you ROCK!:head: .....sorry, Blame it on the '80's

Any thoughts on germing temp? I'm using Jiffy seed starting mix, Ph'd h2o and holding soil temp at 86-88
 
Thanks much. Like like mid 80s so you should be fine.

Muddy.... you ROCK!:head: .....sorry, Blame it on the '80's

Any thoughts on germing temp? I'm using Jiffy seed starting mix, Ph'd h2o and holding soil temp at 86-88
 
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