We carry many hard to find fertilizer ingredients and combinations.
Fertilizers like 5-10-10 or a similar ratio are recommended for most garden plants, because most of those plants are dicots, and are more like clovers. However some plants are monocots and require higher nitrogen fertilizers like grasses do. Corn is the most common example and it would require a fertilizer more like 10-10-10 or a similar ratio.
For a broad over view please see this article:
For a specific crop please see this manual, and the fertilizer requirements will be given in pounds of actual plant food units: