Anthem said:

I am afraid that is bud rot. It tends to manifest itself in the largest colas first. Once you see it on one usually within 4 days you will start to find more

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JD6 said:

Thanks for answering.
I take it you're sure?
...
Can you shed any light on the purple colour on the leaves?

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Xhale said:

The brown is definitely bud-rot :( sorry.

I once had a blueberry widow who developed dark purple leaves/buds similar to your leaves...this was according to plan :) some strains turn purple/blue when they get cold for a few days. my plan was simple: I flipped the plants a bit late in season such that the last 2or3 weeks of flowering was during end-autumn

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JD6 said:

Thanks.
I'm going to harvest it now, I suspect the rot will keep happening if I leave it to grow, its only a couple of days since I lost a large bud to rot.

The weather has turned pretty crap lately, so that could well bethe cause of the purple.

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freezeland2 said:

The purple is caused by Anthocyanins and is natural occurring.

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