problems right before the harvest

This plant is about to turn 5 months old on June and the weed has been growing for about 2 weeks. It is in a 3:1 combination of soil with pearlite. After its 1st month I started watering it with fertilizer (25-10-10) once every 2 weeks, did this for February and May. Since those 4 times I have added no more fertilizers.
The leaves have started to get burned at the tips about 1 month ago. The only significant change that has happened is less sun (10hours only and cloudy) and more humidity (70%) due to winter, I'm not sure if that can cause the leaf burning and the yellowing.
Besides that, I'm not sure when to start harvesting. Can I leave it more time so more weed can keep or growing or could I also start loosing weed since the plant is getting week with the climate change?

did you flush before flowering?

you need a lot of P for flowering. you said your NPK ratio was 25-10-10 did you switch it for flowering?

LiEBE420 said:

did you flush before flowering?

you need a lot of P for flowering. you said your NPK ratio was 25-10-10 did you switch it for flowering?

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No because I only used fertilizers for the vegetative state. Then I just stopped using because I think I used too much. But now I think it's to late to add anything because I'm near harvesting time.

Sounds like you are growing outside. The yellowing of the leaves is normal during flowering and the burnt tips is probably from the cooler temps. The recomended NPK for flower is 10-30-20 and a 25-10-10 fertilizer could have caused a deficency and the burnt tips too!

But when should I harvest because the bottom leaves are starting to fall out probably because there's not much sun, its usually cloudy and there are only 10 hours of daylight. If I leave it more time can it grow a bit more or is it even possible for it to lose some of the weed that has appeared?