More important then the analyses is what are these made of. As long as the material they are made of does not cause foaming or explosions, when mixed together, there should be no problem.

Organic fertilizers are all made of various protein sources. There's no danger of foaming or explosions.

If you want to save a lot of money, check out the ingredients on your fertilizer and visit your local feed stores to buy them. My favorite currently is alfalfa pellets (sold as rabbit food) based on price.

Here is a photo posted here last year by mrmumbles. He fertilized with alfalfa in May and took the picture in June. The lawn is zoysia. You can see the improved color, growth, and density.

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