First time grow - Have 2 questions re: healthy plants discoloring

Troubleshooting
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I have 2 successful Master Kush plants in beginning phase of flower about 4’ tall and a tall one still in veg that’s approaching 6’7" in height, that is showing some wrinkling browning at its topmost leaves - please see first photo and kindly advise if you can. Can this simply be the heat from 90 degree humidity?

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Second question: What could the amber coloring be on this bud on my Northern Lights Auto in flower? I’ve been hearing about providing some breathing room in my fabric greenhouse for the plants during this humid spell, but all plants are thriving otherwise and other buds look good as they go through flower. Always concerned about bud rot in this climate. Please check the bud close up and the larger view of the cola in these next photos…

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Any help you great folks can provide is appreciated.

Blessings on your growing season.

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Howdy Jabba
Second picture looks like bud rot.
I don’t know if it is me but picture of bud ,when I zoom in looks wet.
Maybe I am seeing things.
Are you able to roll up sides of tent ?
If not keep door open and maybe put fan inside, 90% humidity is not good for flowering.

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Thanks, Hashtonb,

Yea, I’ve been ready to use a fan in the greenhouse due to the humidity. Fortunately we have enough room in the fabric greenhouse for all the plants to breath. Clearly we have to deal with the high humidity. I’ll get some more air flow in there.

@Hashtonbutcher …All the best, Ja

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