Dying platns

[Growlady]

I am having trouble with my plants. They should be in the flower stage now but something is very wrong. The leaves are turning brown and yellow, starting at the tips and progressing. When you touch them, they are crumbly. These are auto plants.

[Cannabliss]

Sounds like a pretty advanced deficiency. However, nobody can truly help you without any pics in natural light and some background info on the plants history. Feeding schedule, soil or hydro, lights, etc.

[starramus]

Sounds like my first grow in Miracle Grow Potting Soil. You're not using MG are you Growlady