Help Dark patches on new growth

[kls500]

Plants were germinated around April 1, now growing outside in 10 gallon fabric pots. 6 plants in total, 4 have theses dark patches on the new growth, but not all of the new growth. Plants are Blue Dream and Aurora Indica. Growing in southeast USA.

 

[GreenAlchemist]

What have the temps been like lately?

I personally wouldn’t worry as it seems (to me) to be genetics. Some strains turn purple as they flip to flower, but I would keep an eye on it for sure.

 

[kls500]

it's been real hot the last week, 90+

 

[kls500]

It's been real hot lately, 90+

 

[PLreef]

My best guess is genetics. Like GreenAlchemist said some strains start to turn purple as they get older. I've had some start off super light green and finish straight up purple.