Foliar feeding is your problem. Don't feed this way - it's not dependable, you don't really know whether it's the right amount. You wrote something about foliar feeding with more than one kind of fert. Why? That's asking for trouble. If you grow in potting soil, one thing you can do to make this work is go with a fert that dissolves in water and just water with the fert/water mix if you want. You can measure pH but I wouldn't worry about that too much. Maybe take the TDS/PPM measure up to about 1200 or so as they grow. I'd stop the foliar. You say the fan leaves have turned brown which is a good indication of either heat stress or too much fert, typically speaking.
polishpollack Reviewed by polishpollack on . 42 days 12/12--help well its now 42 days 12/12 and i may have to cut two of them down because the yellowing and browning are now going into the budleafs and no fan leaves or branch fan leaves are left (except for one plant thats losing them fast) still don't know what happened. last year used same methods and products and got 7 1/4 0z. this year ha ha. so if any one can see something to explain what happened please let me know so next year i avoid this kind of shit. (only do 1 a year) used pro-mix potting soil Rating: 5