Will Plant Yellowing Out Harm Harvest ?

Hello folks , Just about at the end of this grow and a little into week 6 of flower I started having a bit of issues with this girl. The strain is " LemonBerry " and seemed to be a simple enough of a strain to grow , that was up till mid flower when I started to notice around 5-6 weeks she was getting a tad bit nute burnt at the very tip of leaves. I thought this was odd as I was only feeding approx 500 ppm in a 6 Gallon DWC under 540 (True Watt) of LED with approx 200 watt of CFL side lighting. I backed off the nutes a bit and seemed the burning stopped however then the fan leaves rapidly all started to yellow within the next week or so. It seemed to be very touchy with feeding , I could not find that balance , seemed to be either over or underfeeding. What was weird was even though she was yellowing fast on me , she was not eating any nutes just drinking water so for being hungry when doing a res change last couple of weeks I see PPMs keep rising as water level drops so for some reason once the yellowing started I continued rapidly , I was / am stumped. Anyway I have been milking her out we are going into week ten here in a few days , I ran Flawless Finish with my RO water this past weekend overnight then have been running straight ph'd RO water since. I would like to see a little more amber in the the trich's before I cut her but concerned with the rapid yellowing and loss of almost all fan leaves I pushed forward with the final flush preparing to take her early if need be. As mentioned I would like to let her go rest of week if not a little longer but if I do will this effect my final bud? I already see that some of the small sugar leaves around the buds are starting to yellow as well .. Any input is appreciated. To wait or not to wait , Hmmmm
EDIT : Also the smell is amazing and the buds are rock hard thick n sticky as of now . If I continue to wait am I risking loosing flavor, fragrance, quality , etc from this final starving period ? thanks in advance
( P.S. = Sry about the LED's being on for pic , I could not access the power panel @ moment and was kind of in a bit of hurry to get this posted I will take a better photo with lights off once I can get over to switch lights off )

Your low water level might be due to rising air temps as we get closer to summer. Is this possible? It sounds more like you haven't been using a high enough ppm but without good close-up pics it's hard to say. Just because you see yellow tips doesn't always mean you have fert burn. You might not be feeding enough and also this plant will yellow and die naturally anyway. If you're 6 weeks into flower and have good production so far, maybe just give nothing but water now and let them die. Harvest.

Leaves start to yellow week five onwards as a rule,and is totally normal, yellow tips on sugar leaves ( if in the bud)indicates salt build up and lack of nute uptake. Need more info and pics really.tgey look pretty normal to me. Try feeding w f w f or just plain water

As long as they are yellow from being underfed and not overfed due to a broken meter, it will actually be better and smoother weed

Is the ph staying stable? I have one at the moment that the ph dropped too much and started to yellow. With the ph too low it just won't eat. Just a thought.

Thanks for the replies all ... PH has been pretty much stable drifting from 5.9 to around 5.4 by week end res change. Temps have been kept 70-80 early flower I have been cooling down to around 65-70 this past week as I get nearer to harvest. As of for PPM I would " assume " I have been on more of underfeeding side since when I got over 500 ppm and saw yellowing burnt tips , I cut that back to around 350 ppm , So my guess on that would be perhaps more of an underfeeding issue rather than over feeding. I was able to get to power panel, kill lights and get a few more pics .

70's natureboy said:

Is the ph staying stable? I have one at the moment that the ph dropped too much and started to yellow. With the ph too low it just won't eat. Just a thought.

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ANC said:

As long as they are yellow from being underfed and not overfed due to a broken meter, it will actually be better and smoother weed

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Yeah PH has been Ok ...
This is what I am hoping for , but just don't want to chance degrading the final product.

Update : So far guys I have been holding out and keeping my fingers crossed. I have keep it going the extra few days I wanted for sure since posting last. I got some close up pics of the nugs ( I guess I should have posted those in first place ) / Anyway as you can see from the pics what I am worried about I don't want that yellowing to continue eating the sugar leaves any further also when flushing for too long will the plant start to eat it's own buds for nutrients as it does fan leaves? that is my concern if not and buds will be just fine I would still like to wait a little more before harvest to see a little more amber in the trich's , but if that is a threat I will pull much sooner like asap . Whats do you guys think is she ready or let her go a bit still ? Thanks again for the help and feedback

You're over ferting that plant.

polishpollack said:

You're over ferting that plant.

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I was thinking that as well, either over or under feeding. The only thing I don't understand though is how. The highest amount of nutes was at week 3 when I went to 500ppm noticed leaf tips burning a little so backed nutes down and they were never above approx 350 ppm after after that. They really did not start yellowing after the slight over feeding they seemed to have bounced right back and were doing really well till about week 6-7 ( ppm's were around 250-280 ) during those weeks. That is when it fan leaves started yellowing quickly so I was under the assumption that between it being late in flowering the natural yellowing as well as my low dosage of nutes were causing it to yellow so fast, I nute burned a NL my first run and the leaves were very dry and brittle. However on the plant the leaves / buds are not dry and brittle. So not sure what the deal is with this lady lol. Thanks for the reply though ..I did not want to take the chance so I put her in the complete dark period for around 48 hrs and I will chop her in the morning or next day and hope for the best. I ran Flawless Finish on it about 12 days ago and have been flushing with straight RO water since so hoping if it was over feeding that that will do me some justice.

Is this soil, dwc, or coco?

polishpollack said:

Is this soil, dwc, or coco?

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Its was DWC .. Harvested her yesterday ..hanging now waiting and hoping all went well lol

Unless you gave nothing but water for about the last week or it's life, it probably won't taste so good. It would use up what it has stored and die naturally. Ferts in a plant when consumed can be unpleasant.

any final results?