7½ Weeks HELPPPPPPPPPP

7½ weeks in flower
Organic soil
1000 watt HPS
Only worm castings, and bat guano tea, 3x from day 1
This burn started after a night of low 50's 1½ weeks ago, so I assumed this is what caused it. Nights now are 57° -60°. I would not think this is causing the problem but I'm at a loss. Right now I'm not doing any thing, just watering.
If you'd like more info on my grow follow the link to my journal.
I'd really hate to lose this at this stage.

You're very badly under feeding your plants. They need far more nutrients than you have given them.

I agree they are under fed when they start to turn yellow and your not giving it any nutes that is the plant stripping itself of everything it has to survive

Yes i agree they are turning yellow cause of nute diffen. get a good bloom nute start with 1/2 of whats recommened to see how plants react to it. Also try super cropping to open the plant up a little to let some light in

i need help I'm rookie said:

Yes i agree they are turning yellow cause of nute diffen. get a good bloom nute start with 1/2 of whats recommened to see how plants react to it. Also try super cropping to open the plant up a little to let some light in

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it shouldn't have that much longer to go and wont need that much to keep it going at least, if it hasnt been getting fed that much its not a good idea to bump it up all that much, maybe a bit off all purpose and molasses

it looks like a longer flower then 8 weeks to me, has any of the pistils start to turn orange at all?

Dont dare super crop that plant at this late in the flowering!!!

It looks like it has a few weeks left at least, I'd guess harvesting around week 10. I'd definitely give it some nutrients, that will help it pack on some more weight before your final flush and chop. 25%-50% strength bloom nutes should be a good start. If they respond favorably, go up to full strength. The damage that's already done will never heal, but you can still help those buds along.

I wouldnt crop it now either.It will cause them to go into shock.

I personally take the bottom third of branches off a plant when I first pull it out of the veg room and put it into flower.It seems to make the plant kick into overdrive and produce better.IMO anyway.

Yeah, that's a phosphorus deficiency. Listen to those guys and give it some nutes, it'll help your buds fill out.

you need to take care of your plants. but it looks good.

So a little bat guano, worm castings molasses tea that sound good? Why the comments about cropping? Never mentioned cropping.

nute it up, I agree, I would do the staircase thing as well. Remember to flush them before you harvest.

TreesAsMedicine said:

nute it up, I agree, I would do the staircase thing as well. Remember to flush them before you harvest.

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Flush what? All nutes are part of the soil.

Yes, you flush the soil. You need to do some more research on growing. Knowing what to do before you create a problem will result in bigger harvests with less effort. Well worth spending a few afternoons reading all the forum stickies and important threads.

BlueFish said:

Yes, you flush the soil. You need to do some more research on growing. Knowing what to do before you create a problem will result in bigger harvests with less effort. Well worth spending a few afternoons reading all the forum stickies and important threads.

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Flush what? No nutes added no nutes to flush, right!

What we're saying is you need to add nutrients now to help your plants and then flush it out later, about a week before harvest.