looks like that plant needs to be repotted, a bit small that.i also use the exact same fertilizer as you.. I did the same mistake at first by overfertilizing the small plants and lost afew. Guess i was too eager for them to double in size just like the picture on the box
I dilute 7 ml of that miricle grow into a 4 pint milk cartoon for one plant but maybe you should wait a little while before doing that dont want to nute burn it.
I have 5 plants all growing outside in the uk. 3 are doing vey well all showing signs of being girls they are about 2 2/3 feet tall, one other is just as big but i had mayor probs with over nute , Maybe it was the to alkaline tap water which made the pH rise to about 6.9. I tried Epson Salts the other day (half a teaspoon to 4 pint milk carton for each plant, seems to be working thaoough a bit too early to say. Still have to check the pH after the epson salts....
Hope my experiance is of some use to you
