late flowering stage has black tinge on sugar leaves

[newby1000]

First time grower. I switched to 12-12 on Jan 3. Just noticed black tinge on sugar leaves and not sure what to think. Is this normal in late stage flowering? Pictures attached and thanks for any comments.,

 

[YYCannabis]

Might be normal depending on what strain it is.

 

[newby1000]

It is Indica

 

[SoOrbudgal]

Looks normal nice looking plants

 

[RetiredGuy]

Nice looking first grow

 

[PeterMatanzas]

Looks great, the dark coloring in leaves is anthocyanins

 

[newby1000]

Thank you for your kind comments and help on my concern. Hate for things to go sideways at this point. All the best.

 

[JeffInCanada]

Interesting...I had to Google anthocyanins so I learned a bunch today. I was trying to determine if they are genetic or a result of the environment when they express in cannabis. Maybe both. Perhaps from the colder temps. I couldn't really find a for-sure answer...do you happen to know? Thanks again for posting!

 

[gbauto]

More than likely genetic.
I ran a Dark Devil auto a few years ago. Freaked me out when it damn near turned black.
That was one weird-ass plant-dripped red sap all over the place...bizarre

 

[SoOrbudgal]

Me too gbauto i still got 2 seeds left but only grew like 8" i did not see the sap just total blackness