Over the last 2-3 years I have planted six new citrus trees to replace ones that I have lost to freezes over the years, and to augment the variety of citrus I am growing. Most of these are Satsumas, all are growing in ground on the 8b/9a line in Louisiana, I also have 3 large mature Satsuma trees. However no matter what I do the leaves on my Meyers lemon are always more pale than any of my other citrus. I try giving it more fast acting nitrogen, and it greens up some, I try adding epsom salts (soil test show deficiency of Mg, along with just about everything else N,P,K, Cu, only Iron is in normal range in sandy loam soil), I have also tried just feeding it extra 18-9-11 fruit tree fertilizer blend with micros. Each has made it look somewhat better, with the 18-9-11 fertilizer seeming to overall help the most, though it is still a bit more pale than my other citrus, and it requires frequent (monthly) feeding to keep it this way. It has grown since being planted, but not nearly as fast as some of the other citrus that were planted at roughly the same time, some of which have went from 2 ft tall to nearly 7 ft tall in under 3 years.
So is this Meyer's just living up to its reputation of being picky and wanting more Nitrogen than other citrus, is there something else I can do, ...?
thanks