This is a Northern Lights auto at day 93 of flowering. She’s nearly ready, and I have already harvested a few colas - just waiting for the others to develop more amber trichomes. Here’s a photo of the plant:
But a few days ago, the leaves on all the lower (and less mature) buds started drying out and the sides curling up.
In the upper buds , the remaining leaves are not curling, but they are already quite dry and brittle. This looks normal for an advanced plant, IMO.
So what’s wrong with the lower buds? I was hoping that they would continue to mature, and I would harvest them a bit later.
The temps in the tent are high 60s in day, high 50s at night, and RH about 40-45
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End of life Grow Bro, she’s consuming herself. At 93 days of flower I would say it’s a few weeks past the harvest window. Are you checking the trichomes with a loop or mag glass 
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Yes, I check the trichomes every day with a good microscope. They are still less than 5% amber on most of the buds. As I said above, I’ve harvested a few of the colas that showed about 10 to 20% Amber, but I’m waiting for the rest to mature.
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In the past, when I complain about how long it takes to get Amber Trichomes everyone says patience, patience! So I’ve tried to be very patient this grow!
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I would consider a partial harvest and let the lower fruit ripen another week or so
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Yeah, sounds like a good idea.
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Will the lower buds continue to mature, even though the leaves are all dry and curling up?
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Part of the end of life cycle on some strains
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I have had some durban look like death at the end. It was still 
bud.
Nices buds!
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Happy Berfday @4204life !!! It’s a party over here lol
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Maybe im incorrect but 40-45% RH seems on the lower side and would certainly contribute to an excessive dry. I’d watch your dry/cure closely just so you dont get too dry. A good bud wash will introduce some moisture back to the plant post harvest as well. Looks great though.
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