What are you fertilizing?

Many like the high middle number for blooming plants, but best I can tell phosphorus is over rated as far as nutrients go.

It's not that it isn't important, but tissue testing of various plants (to determine what nutrients plants are actually taking up and in what amounts) seems to be showing that plants use much less P than was previously believed.

I have even seen studies that suggest high P fertilizers sometimes produce blooms by creating a nutrient lock up issue that stresses the plant which causes it to flower.

I just use fish/seaweed emulsion as it seems to work well for everything. I am not a rocket scientist or anything so I pretty much have to keep things simple ;-)

Depending on what you are growing you might want to use a water soluble fert in addition to the slow release granuals. The slow release stuff is nice to provide a more even nutrient availability, but with rapid growers like annual flowers and veggies the slow release stuff may not provide enough nutrients when the plants are growing rapidly or setting fruit or what have you.