Questions Dry tips of the middle leaves. Diagnosis?

@monkeydo Thank you for your reply. Do you have any recommendations to solve the issue? Will I need to rinse the plant?

I'll start with full disclosure, while I do occasionally grow in soil, my primary expertise is in coco grows. You mentioned slow-release fertilizer, so this isn't an organic water only soil. First I'd try to correct the overwatering situation. It's not easy when you're outdoors but it could be a part of your issue. Some might say flush the plant but I'm concerned not knowing what slow-release fertilizer you added in the beginning. We have a few soil experts here that should have a better idea of the best direction to go with. I'm hoping someone might jump in with some ideas.

@monkeydo Oh. I see. I added an organic NPK 4-4-4 mix in the soil about 10 days ago. At the same time I also added a little chelated iron and boric acid (1 tee-spoon in 4 lt water and watered with 2 lt of this water). Αnd as I've already said Ι sprayed molasse (1/2 tee spoon in 1lt of water) on the leaves three days ago because I thought the problem was potassium deficiency.

Your plant looks maxed out on nutrient to the point of overload. First of all, stop feeding her anything and let her figure things out. When you are growing in good supersoil you usually don’t need to add any nutrients during the vegetative growth phase, and only sometime during flower, depending on pot size and soil. Sometimes when over fed they can adjust past the extra nutes and continue forward. You could try flushing her some but that’s your call. 

@monkeydo Thank you so much! At least now I understand what happened.