it probably isnt flowering yet, the days are getting shorter but not short enough yet. look closely around mid august. get a better fertilizer just use 1/2 the amount it says to see if your plants can take it. for now use something like a 20-10-10 or similar numbers, then when you notice flowering use a 10-20-10. try adding molasses when you water, a teaspoon or two to a gallon of water.