breeding blk seeds auto sour diesel

[hashead]

So I won a couple seeds on here last festivus. Had two blk seed auto sour diesel left so I decided to breed em using CS. They both popped and took off well, I picked the runt to get the silver and started spraying it at 2 weeks, at week 3 both started showing pistils, the cs plant showed less and at week 4 (now) isnt showing anymore pistils but is showing small bally growth. My question is how long for this plant to produce usable pollen?