What type of fertilizer do you use for coffee plants
Reading http://www.coffeeResearch.org yields the suggestion of manure and phosphate. Note that many USA soils have sufficient amounts of phosphate naturally. http://www.coffeeresearch.org/agriculture/growing.htm
ThanksgivingCoffee.com suggests fertilizer meant for roses, or rose food. To determine what your plants need, test the soil even if you are growing in containers. If you go through your state land grant university, you specify what you wish to grow and results tell you how much of each nutrient you need to correct deficiencies and on an annual basis. So the correct fertilizer is based on your soil condiitons.