witch to use and for wat

ok so im on a budget my freind has fert and he has two kinds both for rose bloom a 8-12-4 n an 9-14-9 can i use the 9 14 9 for flower "????? and the other for veg n how much ???

The Don
 
ya but witch ones do i use for wat stage do i use the 9-14-9 for veg or flower will it be better or worse for my plants and same witht he 8-12-4 veg or flower will it help or kill????????????
 
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