Much of that phosphate will remain due to the clay soil.
When you aerate the soil in the fall or spring , it will break up much of the soil and redistribute the fertilizer.
That would be the ideal time to add more organic matter and compost to break up the soil and lighten the soil even more .
Lesson learned !
Well, fortunately (or not) I did not really put any into the okra/sunflower dirt patch with the clay.
This all went onto the pots. What I will need to do is make sure the pots I use next time have dirt that is not too phospataceous! Since most of my pots seem to be doing well at the moment relatively speaking, the challenge will be to remember which pot it is that contains the inordinate amounts of phosphate!