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Old 11-02-2016, 10:12 PM #1
kanzzzz
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Large Fan Leaves (blocking light or providing energy for the plant?)

Ok I know this subject has been done to death , but im wondering what peoples opinions are.
What are peoples thoughts on removing large fans leaves blocking light getting to buds , or maybe just removing them the last week or two of flower to let more light in?

I don't know what exactly the leaves do if im honest, however I assume since the plant producess them , there vital to the plant .
However what I do know is that fan leaves blocking light to lower buds will cause those buds deprived of light to not really develop.

Clostest thing Ive done to test this if you will is, Iv done larger plants that grow huge , but get a little tight so light cant get right down to the plant. Then a smaller one , almost identical in shap and structure just not as bushy , so light can get into the whole of the plant.

Now the small plant with not much leaves blocking light etc , will have top quality bud from top to bottem of the plant, no popcorn whatsoever, a joy to trim really.

However the bigger plant that has all those big fan leaves blocking all the light from getting in has loads of popcorn.

Now the problem here is the quality of the tops of the buds are the same on both the smaller and bigger plant in size and quality , give or take . The only diffrence is the lower buds. The ones that cant get light due to being blocked by the fan leaves.

I usually just tuck fan leaves in these situations , but they can still block alof of light.
Im wonddering has anyone seen any good tests or tried this before to see if theres a magic middle ground of removing some fan leaves for better light , but not butchering the plant?
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Old 11-02-2016, 10:26 PM #2
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Have a read of this kanzzzz.
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04-12-2013, 04:24 PM #15
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Pluck those leaves, they're taking away from the buds!
I'm a senior female who has been growing all sorts of plants, bushes, trees my whole life. I learned it from my first generation American mom who grew everything too. When a plant like marijuana, which is a terpenoid, (produces resin no differently than a pine tree), gets to the stage that it is flowering/budding, the plant pretty much ceases to grow. At this stage all plant's energy is going toward producing seed be it in the form of fruit, vegetable, flowers, buds. Every living thing is programmed to PROCREATE if nothing else. Any plant in stress, a tree that is dying, a plant in it's final stages will quickly try to procreate as much as possible.

We prevent female marijuana plants from being pollinated and seeding so buds continue to swell in the hope of being pollinated and the plant procreating. The big marijuana leaves on the plant at this stage are doing nothing but taking resin away from the buds. The plant itself should no longer be growing because it's reached it's pot size potential and we've forced it to bud. The buds are what people want to smoke not leaves, so pinch them off. Use the sticky leaves to make butter, or hash. As for the resin in the plant, it's now known that higher temps, increased sunlight, and decreased water supply really motivate terpenoids to produce resin.

Pinching out the big marijuana leaves allows:

Light and heat to hit all budding sights
Keeps the plant drier signaling more resin production (the hydro in THC is a clue) to protect and nourish the swelling buds.
Alerts the plant that a herbivore may be eating it. Resin is a plants defense. Most critters do NOT like the taste of resin and therefore the plant will produce even more resin.
Allows all the good juju (resin) to go right to the buds and not on the leaves, which no one wants to smoke.

Think about it. Everything in my yard perennials, bushes, trees, herbs, roses, vegetables get thinned out once, twice, some three times over the summer or they suffer. I've flowered a 4 ft. lime tree in a pot. I've got gardenia's blooming on a giant 3 ft bush in my living room in MI right now. Always remember that the top of any plant in a pot cannot grow beyond the root system that supports it so once the plant/tree is mature, cutting back/pinching is necessary, repotting is NOT because part of forcing any plant to bloom is letting it become root bound, taking away light, and restricting water supply. This makes the plant bloom faster and more vigorously because it's all it can do. It must produce seed to maintain the species despite its dire conditions (starvation) and will do it every time.

When my plucked Northern Lights girly gets even more white with resin I'll post pics. She's only into her 4th week of flowering and smells absolutely lovely.
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Old 11-02-2016, 10:53 PM #3
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Old 11-03-2016, 05:39 AM #4
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nice post al70, I have a question, when can we start plucking off those leaves? after flower stretching phase? or would u say after buds development phase going into bulking?
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Old 11-03-2016, 05:48 AM #5
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I start plucking leaves that block light and sucker branches even before flowering.

Then I do it again a few weeks into flowering and maybe again lightly towards the last few weeks of flowering.

I don't take everything off, just suckers that won't produce and leaves that block light to budsites.
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Old 11-03-2016, 08:36 AM #6
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I generally stay out of these stoner opinion threads.

Using as a basic premise, marijuana plants are really just another C3 shrubbery and not possessing any magical properties, I base my research on standard gardening procedures worked out by hundreds of years of commercial farming.

Years of study cannot be condensed down to a post in a thread.
But saying fan leaves are a drag on the plant and block valuable light is so silly I broke my rule and am posting when I should just sigh and back away.
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Old 11-03-2016, 01:17 PM #7
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Quote:
Originally Posted by Phaeton View Post
I generally stay out of these stoner opinion threads.

Using as a basic premise, marijuana plants are really just another C3 shrubbery and not possessing any magical properties, I base my research on standard gardening procedures worked out by hundreds of years of commercial farming.

Years of study cannot be condensed down to a post in a thread.
But saying fan leaves are a drag on the plant and block valuable light is so silly I broke my rule and am posting when I should just sigh and back away.
Over ten years of growing plants and loads of similar grows tell me fan leaves blocking light to bud, will stop the buds from developing to there truest potential. (certainly the ones below the leaves). Without making the top ones any better.

Back to my runs with big and small plants , the small ones had great buds from top to bottem , bigger plant only had good top half of the plant, and the buds from the bigger plant where not exactrly double the small plant to make up the difrence.


Thats the very point of my question, I have no doubt that fan leaves are needed , however there is a point they do more damage than good if you will, as I explained in my first post about smaller and bigger plant.

Trying to figure out this middle ground.
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Old 11-03-2016, 05:10 PM #8
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I think the discussion should be when is the best time to pluck! that is the middle ground. that is where proponents of "fan leaves are good for the plants" and "fan leaves block to smaller nugs" meet.
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Old 11-03-2016, 05:42 PM #9
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I'm interested in reading everything on this subject.

I've always been told to trim the lower half of branches in the first week of flowering and then anything else will stress the plant out. However, I would love to know about this as trimming the big fan leaves does logically seem super practical.

Although logically would you want to snip big fan leaves towards the end of flowering like week six or seven when the plant is bulking up?
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Old 11-03-2016, 05:49 PM #10
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I pluck and top everything upon transplant before flowering, 2 weeks later into flower they go and get stripped again no top of course, before stretching stops stripped again, 2-3 weeks usually, leaves get all pulled again before chop.

plucking and topping is all for more tops and to bring lowers up to speed with the rest of the tops, i also throw some pinching of the faster shoots
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