fertlilizer help

i got this fertilizer called mater magic. how often should i use?

Total Nitrogen 8.00% (N)
0.30% Ammoniacal nitrogen
6.80% water insoluble nitrogen
0.90% other water soluble

Available Phoshate 5.00% (P)

Soluble Potash 5.00 (K)

Calcium 4.50%

Sulfur 1.00%

Lol, Mater Magic. I don't expect Cars 2 to be as good, but anyway. The Mater Magic's we've seen have all been 5-5-9 instead of the 8-5-5 you mentioned. It's probably just a different formula. Most fertilizer regimens work well alternating between feedings and plain waterings. Feed them at full strength (or more, whatever they can safely handle) every other time and water every other time. It's always a good idea to use more than one type of fertilizer because no one fert has exactly what every plant needs.