I use Nutricote which is sold commercially under the Nutricote name. BUT most people don't know that you can find the very same thing sold by Home Depot called Dynamite. It is the same thing, it is sold in 2 pound green bottles for $9.00 I think. It is sold this way for retail customers. So "Dynamite" All Purpose Plant Food 18-6-8 180 day, is the retail version of Nutricote.
I found a place on Ebay that sells Nutricote in 50 lb. bags for $125.00 and free shipping. Just type in "Nutricote fertilizer" and it comes up. It is the 18-6-8 180 day formulation. I only have to use it once a year, I apply it in the fall to my pots.
I am also now using Milorganite as well as Nutricote.
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