I know its hard to diagnose without pics but I dont know how to get pics on this site. I have a blueberry newzealand clone and the old leafs are going yellow than burning on the tips and curling with the little veins on them still green. I was wondering if this could be caused by adding to much nutrients or not enough ive never had this problem before. Even the top of the plant has a light green color. The clone is in a 5 gallon bucket and is about a foot and a half tall and the same width I have black earth potting soil in it with a bit of peatmoss. I gave the plant some 20-20-20 4 days ago in a weak dose to try and fix it and its still not getting any better. about a week before that I put on some Bigbud from advanced nutrients but it has no nitrogen in it. Im thinking about adding some nutrients to it to see if it will get any greener as its yellowing to early into flowering (about 3rd week) and pretty fast. I just wanted to see what you guys think before I go adding more nutes. The only part thats making me wonder is that the tips are a reddish orange and look burnt and curled up. its only doing this to old leafs.
You need to flush with about 15 gallons of water then check the pH of your runoff after that. Without a picture its really hard to tell but it sounds like nute burn or nute lock because of pH. Good luck.
you need 3 times as much water as soil to flush it, i just flushed mine after nute burning it, 3 gal soil, 9 gal water and mine is doin great after a day or two recovery....
