There is also a [CITRUS FORUM[(https://www.houzz.com/discussions/citrus-forum-dsbr0-bd~t_29851) you could ask in about your tree.

Okay thanks maybe Ill try there next

where are you .. what was winter like .... did you have a soil test ... how did you plant it ...

how can your neighbors be 5 feet away.. when the last pic makes it look like your tree is more than 5 feet from the fences ....

based on your lawn ..... how do you water it ... what is your base soil.... how does it drain ...

in the first pic ... i cant really tell .. but is/are these all old leaves... what does new spring growth.. if any .. look???

and do understand ... even with evergreen plants.. they shed leaves .. both cyclically ... and in reaction to stress ... and in the process of shedding.. they usually look bad ... but that is not a reason to presume an ongoing disease process ... its no different than late fall with any deciduous trees ...

sooooo .. the stress of planting less than a year ago ... and perhaps a winter that might have been a little colder than the plant likes.. could be the reason for this shedding ... btw .. you dont mention how big the neighbors tree is .... with trees.. we talk about tree time ... which is counted in decades .. so one year from planting is not all that long ...

so many questions.. so little time ...

ken

ps: this MI boy has no direct citrus experience.. so if this is some self evident citrus problem.. forgive me for just tutoring you on trees ...

Have you fertilized it? Citrus are heavy feeders and tend to exhibit chlorosis (iron deficiency) in a fashion similar to your tree. i'd use a citrus-specific fertilizer and also Google 'citrus nutrient deficiency'. I have a huge garden and the only plants that I fertilize are citrus and roses, but I do those regularly.

I am in tampa fl the winters are mild. No soil test yet just moved in last year but maybe I should. I do fertilize with an organic fertilizer I think its 4-6-4. Neighbors tree may be 10 feet away right next to chain link fence out of frame. I dont keep up the lawn but I water the tree once a week deeply. Yes the new growth is the top 3 ft that sprouted up over the past couple months the old leaves are the ones that are effected the most, new growth is still green and looks good. Also seems like its worse on the far side of the tree. I am thinking maybe its a fungal issue? I dont think its nutritional since I fertilize once a month during the growing season but I don recognize that the leaves look like the type they post online in regards to iron nutrient deficiency.

If the new growth is good and the older leaves are the ones most affected, sounds like nitrogen deficiency. Fungi wouldn't just go for the older leaves. Insects typically like the new growth best.

Ok I fertilize a lot but I will look into maybe a more nitrogen based one. I don’t believe the soil quality is high so maybe it just needs a lot of additives

Does anyone know a good service for this, do you just order a kit online?

Here's one: SOIL TESTING

Otherwise, depending on where you live, just google 'agricultural extension offices in florida' and you'll get a list of them in various areas.

There may also be Ag related businesses that sell fertilizer that will also do this.

make sure to read up on citrus greening if you haven’t already