Iron Deficiency in Container Blueberry
One of my potted blueberries is showing signs of iron deficiency (no more than a dozen leaves on one shoot at this point). I collect the water from my air conditioner's condensation drip and use that whenever possible, but I use tap water when the air conditioner isn't running. I have hard water, so I add a tbsp of white vinegar to every gallon, as well as a 1/4 tsp of Pro-Tekt and 1/4 tsp of Miracid. The tbsp of vinegar is just a guess, but it's seemed to have worked in the past. This year, though, it's obviously not up to the task. I can make an immediate change to the a/c condensation water (we'll be in the mid-90's for at least a week, so the a/c will definitely be running), but are there any other emergency measures that I can or should take in the short term?