Yellow leaves with brown spots

Hi, I recomend using a PPM meter and a PH meter, keeping the plant healthy and green all over will prevent the stress that causes the plants to herm amd produce seeds.

Hi there Grower...I had a similar situation with my outdoor grow.. Yellow leafs is usually two issues: 1. Nitrogen deficiency 2. Plant nearing the end of her life cycle. My opinion to solve this: Worm castings is like cannabis Nr 1 cure for any deficiency issues..crazy I know..But definitely make a brewed tea instead for faster results. Also check the lifespan of your strain on the breeders site..which I'm sure you already done.. But that worm castings tea is magical, P.S mix some molasses aswell in your tea..lovely for feeding your soil and microbial life.. All the 👌

Is it possible a bit of phosphorus deficiency? The purple stems and spots on leaves. Check pH is in range .

Dear Grand Master Grower ….. It’s called the Die-Back at this stage of the growth. It happens when the plant didn’t get or got barely enough Nitrogen to support the stretch. The plant is now moving its Nitrogen, mostly from the bottom, to save the tops. You must also know that adding Nitrogen is too late, the roots are processing only Potassium and Phosphorus at this stage now. The only way to add Nitrogen in this situation is a foliar spray with amino acids and some nitrogen. But I don’t really recommend. My best advice would be to let the dying leaves until they’re ready to fall.

Parece ser una carencia de nitrógeno ya que apenas se van poniendo amarillentas las más grandes, quizá que ella se comenzó a retroalimentar pronto 🤔 Puedes probar con un poco de humus de lombriz para no corregir demasiado o ya esperar a algún cultivador más profesional por una respuesta más acertada 🤞