Answer: It could be that you need some trace elements, and a soil test will confirm that for you, but I think it has more to do with the AVAILABILITY of those nutrients. The gardenia is a plant that enjoys relatively acid soil, so pH may actually be the problem, as it affects nutrient availability. With the array of wonderful organic amendments you are using, I'd think the trace elements would be abundant. Only a test will tell. Your extension office can provide you with a test kit - call them at 407-323-2500.
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