Help needed! Purple leaves getting dry and rolled!!

[Ut1]

Hi everybody,
I am growing for the first time just by chance as I found a seed once and I decided to plant it in late May (uk) , with no specific fertiliser or any nutrients and I have to say, I didn't expect the result I got! A couple of weeks ago leaves started turning purple but I didn't take any actions because reading here and there it seemed quite a normal thing for an outdoor plant in a cold environment, but a couple of days ago the leaves on the top started rolling and getting dry... As the weather is very humid and rainy I didn't give much water... Anyone could suggest what to do? I am thinking about actually cutting the top buds CLICK THE LINKS BELOW TO see pics:

https://imgur.com/qwWkUtx

https://imgur.com/pInCtNM

https://imgur.com/StEGyVw

Thanks for the help!!

[Gingerbeard]

You're getting along nicely. The leaves are dying and curling because you're getting late in flowering. It brings a tear to my eye. It's a nice purple strain. What is it?

And welcome.

[Ut1]

Thanks so much for your reply gingerbeard!
I have no idea what it is but I remember was pretty nice stuff where I found the seed..Do you reckon when should I start the harvest?

[Gingerbeard]

Check out this link before you harvest. Purple leaves mean your flowers are sucking up the last bit of nutrients from the leaves. If your plant is outside in the pictures I imagine you're using soil or coco. Take a look at this one about using molasses.

[Ut1]

I will, thank you again!