Is this yellowing normal?

Moving into 8th week of flowering on GG Autos. Top growth is going yellow and getting rust spots. Seems a little more necrotic than I expected...

Opinions?

Depending on the week of flower, yellowing could be from either a deficiency or overfeeding.
Yours looks like it's close to harvest so my assumption here is that your plant is sapping all of its nutritional value from its leaves to give to its flowers.
Have you given it any flushing agent or stopped feeding or did this occur after a feeding?

Jpwt92 said:

Depending on the week of flower, yellowing could be from either a deficiency or overfeeding.
Yours looks like it's close to harvest so my assumption here is that your plant is sapping all of its nutritional value from its leaves to give to its flowers.
Have you given it any flushing agent or stopped feeding or did this occur after a feeding?

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DWC, been slowly happening for a couple weeks now. I'm guessing 2 weeks till harvest.

The8thChevron said:

DWC, been slowly happening for a couple weeks now. I'm guessing 2 weeks till harvest.

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Well I'd say your plant has probably used up all of the nutrients in your res then if the leaves are turning yellow, if you're 2 weeks from harvest I wouldn't suggest introducing any newer nutes to it.
Making the plant think its dying before harvest will induce it to send everything it has in the plant to the flower in a last ditch effort to reproduce so in the end you'll end up with a better quality bud