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Monday, January 23, 2012

Can't Find a 1-2-2 Fertilizer for Fruit Trees

Q. I was looking for the 1-2-2 ratio fertilizer that you recommended for fruit trees.  Both nurseries I looked at do not have fertilizers with that ratio.  The fruit tree fertilizer that they carry has a ratio of 4-2-1.  Any suggestions where I can get the 1-2-2 ratio fertilizer?

A. What I have been telling people is to make their own. You just need sources of nitrogen, phosphorus and potassium. If you are not concerned about organic sources of fertilizer, then pick up some straight nitrogen, straight phosphorus and straight potassium and mix your own.

You can vary the amount of nitrogen or phosphorus simply by adding more or less of each product to a mixture you create. You can blend them together if you want but if they are different sized particles they will tend to segregate and not remain mixed very well over time. I prefer to add them separately. 

You can do the same thing with organic fertilizers. An organic source of nitrogen would be blood meal, phosphorus would be from bone meal and potassium you could use muriate of potash. I found all of these locally in at least one nursery. Purely organic sources of potassium are hard to find.

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