Help with my leaves tips, in flower

[StefanWolf]

Hello I'm approaching late flower and the tips of some of my leaves on all my plants are showing this discoloration, some small portions of the tips are dying as well. I live in southern Ontario and it's an outdoor grow. I use a living soil and hoping to address this issue.

 

[BeanTownFan420]

Most likely it is a root zone issue due to colder nights and will not reverse at this point only get worse.

 

[StefanWolf]

We haven't gotten bellow 5 and that is only once in a blue moon

 

[013]

I noticed those yellow spots near the edges of the leaves (not the tips) kinda looks like pests or leaf miners.

 

[Nunyabiz]

41 F is pretty damn cold.
Roots are probably cold like Beantown mentioned.

 

[JC Grow]

Just colder weather.Overall plant looks ok.I am in Toronto and weather looks ok for the next 11-12 days.