Answer: Ideally you would run some basic soil tests and fertilize based on the results of the tests. They would tell you how much (and if) you need to fertilize or if your pH needs to be adjusted. In general, one would use a multipurpose granular fertilizer such as 10-10-10 or 5-10-5 according to the fertilizer's label instructions and/or some compost. These shrubs do not need a particularly acid soil and are not exacting in their requirements.
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