Makanudo, I understand completely what you are experiencing!! I planted 5 blueberry plants a couple of years ago, and gave them a good dose of "blueberry food" (?? what was in that, it was sold by one of the seed companies here), thinking nothing could possibly go wrong because blueberries grow wild not all that far from where I live. Last year when the plants leafed out, they had bright-yellow leaves... not really the color one expects to see on a healthy plant.
At that point I dug the plants up and replanted them after amending the soil with peat, soil sulfur and greensand.
This year I've decided to move the plants into large pots, with a mixture of peat, potting soil, coir and perlite, plus soil sulfur, and acid-lover fertilizer. If this doesn't work for me, I will admit defeat ...
