I have several 25+ year old citrus trees that haven't been effected by bad drainage/wet soil since becoming established, although I have had at least one die from it that wasn't established yet.

Several years back, two of the oldest citrus trees actually got damaged by some one burning too close to the trees. It took several years for the trees to start even looking better after that, but even then, one wasn't fruiting at all, and the other didn't have many fruits in it.

So, we decided to buy some of those citrus fertilizer stakes. After about one year, the trees went back to normal, and the largest one probably had 300-400 oranges on it this year.

I'm not sure of the brand of these fertilizer sticks, but they had like 4-5 sticks per package and was like $2 per package. The sticks were very large as well. They had a plastic thing you put over the top of them that somewhat protects the sticks when you pound them in to the ground with a hammer or mallet.

I understand that your trees weren't burned or traumatized too much, but my point is that just adding the right nutrients can be the difference between little or no fruit and a huge amount of fruit.

If that doesn't work, and you get a lot of blooms but little or no fruit, then it could be a pollination problem. Add some trees, plants, and flowers that will attract bees. You can even order mason bee kits to help with pollination.

You might have a point there. I've been puzzled, because the lemon and the tangerine are growing right next to each other, but the lemon tree has a fair amount of fruit but the tangerine doesn't...however, the lemon's leaves are showing some sort of mineral depletion, more yellow-green than the bright green they should be. The tangerine's leaves are much greener, but it stinted on the fruit. So maybe there is a lack of nutrients and the trees dealt with the lack in different ways? The lemon producing fruit at the cost of it's overall health and the tangerine not fruiting in favor of it's overall health.

Hmmm.

Well, I will give them both a good pruning this year, keep an eye out for any insects and feed them. Thanks for the thought.