16-16-16 fertilizer #172593 - Ask Extension


16-16-16 fertilizer #172593

Asked April 01, 2014, 1:55 PM EDT

Is there an organic 16-16-16 fertilizer?

Multnomah County Oregon

Expert Response

I located several such commercially packaged organic fertilizers available via mail-order by searching with the phrase: 16-16-16 organic fertilizer" -- if you do a similar search, you don't need the quote marks. But I’m certain you will be able to purchase what you need at a local garden center without the need to pay shipping.

Here’s how it works:  A fertilizer with the analysis of 16-16-16 has a ratio of 1-1-1.  So, you can use any fertilizer where the 3 numbers are the same.  Some examples are 4-4-4 or 5-5-5 or 8-8-8, and so on.  You could also be successful with slightly lower number for the middle (potassium) and final number (phosphorus).

The difference in using any fertilizers is the amount you apply each time.  The package label will state the amount but, in general, you would apply less of the 16-16-16 than of the 5-5-5, and so on.  

“Fertilizing Your Home Garden” explains a number of details about using fertilizers which will be useful to you and your plants.  http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/19239/ec1503.pdf

Jean R. Natter Replied April 01, 2014, 8:05 PM EDT

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