Veg time in relation to yeild what do you do?

Hello guys looking in,

I reached the stage where after some time growing i find myself now able to ask this question. Firstly let me roughly explain where i'm coming from,

I grow under a 400w Grolux lamp. I as you expect have tried to improve yeild. I have grown 3 foot plants, I have grown 2 Foot plants I have used superbud etc etc.

My conclusion is this and this is where i'm at i wish to grow my plants and flower them to there natural height i will trim the bottom 1 foot of the plant as this part of the plant does not get the 400w light so i've learned now cut it off so the plant and light can consentrate on the top two foot which the 400w is effective up to.

So i keep reading and seeing on here about veg longer will improve yeid ?

So if i veg my plants for lets say 6 weeks instead of my normal 4 weeks, when i put them into flower they will after streching they may well be 4 foot tall given i still only have a 400w i still have to trim a foot or even two given its final height would i still of benefitted from giving it extra veg time?

I think it is a combination of factors. I have not done much experimenting so hopefully someone with experience will chime in.

But i think the yield is only going to be as good as the light penetration will allow. So if your light is penetrating 18-24 inches there isn't any point in having bigger plants than to achieve the 18-24 inch canopy.
does that make sense?

Yes that does make sense and is how i see it.

It's just i hear that 4 weeks veg is like a least amount of time you should veg regardless of the height.

So if by vegging longer it does not improve the strength, quality and ability to necessary increase yeild of the plants.

That is a factor based purly on light, not the length of veg time ?

Yes, the experiment in my sig was originally to show that veg time has a direct relevence on eventual yield.

Of course the longer you veg', the more you will/should yield.

Well that throws the cat in with the pigeons

So i can now ask you this,

1) A plant vegged for 4 weeks that has grown two foot placed into flower under a 400w Lamp will yeild x amount.

2) A plant vegged for 6 weeks that has grown to 3 foot placed into flower under a 400w lamp will yeild x amount.

So given light (400w) in this case being the main factor for yeild how can a 6 week veg plant give more since light=yeild, can you explain this in a little more depth for me.

kathleenbilly said:

Yes that does make sense and is how i see it.

It's just i hear that 4 weeks veg is like a least amount of time you should veg regardless of the height.

So if by vegging longer it does not improve the strength, quality and ability to necessary increase yeild of the plants.

That is a factor based purly on light, not the length of veg time ?

Click to expand...

i think veg time plays a huge factor in yield -- however it is superseded by the available light.

another words, given enough light penetration, the longer veg time will produce higher yields.
However - if the light can't penetrate enough - then the longer veg time will just mean you have to wait longer to harvest

another factor is how much room you have to grow - longer veg time resulting in higher yields won't mean much if your tops overgrow into your lights!

i think the trick is having enough experience to know what is ideal for your garden.

well said email... yes, there are far too many variables to take into consideration that anyone could tell you what is best for you.

Obviously logic is your best weapon, and if the math in your head tells you to veg a certain time so as not to lose out on yield through light penetration, then you should listen to yourself.

What I will say is that if you only intend to veg' for 4 weeks then consider getting smaller pots.

email468, i think you began to answer the question,

lety me try to answer this myself and then you can build on it or tell me why its wrong.

Firstly the longer you veg a plant for 6 weeks or lets say 8 weeks, the bigger it will be, and tall too it would of developed more nodes etc.

However if placed under a 400w lamp it would not give any more yeild than a veg plant of 4 weeks under a 400w lamp ( because yeild = light )

So a plant thats been grown for 8 weeks and stands three foot tall with loads of nodes etc put under a 400w lamp would not get the light to give you the benefit of a plant that has been vegged longer since it will stretch further and may well grow to 5-6 foot. (Based on the penatration of a 400w)

Now if you had a 1000w lamp then the answer would be yes because you have more light and the extra height and additional nodes on the plant would then grow sufficiently to justify the extra veg time.

Now can i ask you this,

Is this right or wrong now that i've broken it down into a yes or no?

yes -- but it still depends on other factors - like the strain you are growing - temperatures, humidity, nutrients - any pests, etc...

but all things being equal - the answer is yes.
now you can change things by pruning, lollypopping, doing a modified SCRoG, or any number of things to allow more light penetration allowing for further veg times and higher yields.

if you want the biggest yields, then lots and lots of light with plenty of room to grow - like outside.

OK thanks i take that as a yes!

Onwards and upwards i go....''