help needed fast please yellowing tips of leaves!! Help

[Warrior]

Hi guys, I have a couple of plants just starting to get yellowing of the tips on the leaves, they are now in flower what could it be please? all replies will be greatly appreciated..Please see pics below thanks in advance

 

[SmashedByHashish]

they are dying man...no really they are...it is part of the cycle of life my friend...hakuna matata

when these ladies are refused N for so long they will develop a N def...all natural.

 

[Warrior]

Thanks for your quick response but its only on a couple of the plants and I have never encountered this problem previously, are there any other possible causes?

 

[SmashedByHashish]

how many weeks into flower are they?

 

[Warrior]

They have approx two weeks left

 

[Smokechoke]

Hope this helps

 

[SmashedByHashish]

yea...there ok man...all natural...

 

[Warrior]

Many thanks for that respect !!