I agree...

I agree as well. It looks fine.

Thank you so much. Although I do feel stupid as well as tremendously relieved :). As I said, I panic easily. It's a learning process. Thank you!

Your tree looks good, it is adjusting to lower light levels of autumn and dropping old leaves that do not produce food for itself anymore. Nothing to worry about. Also, your tree is in ground so it is much easier to care for than citrus in pots, don't baby them too much sometimes over care can do more damage than good.

Evan

Where are you located? the 10a zone means, southwest coast (San Diego), south part Fl, Hawaii, or maybe Houston area. Is the plant shaded out by your house or large trees?

As a general statement, the plants all shouldn't be seeing much in terms of lower light energy (well.. 77% of peak in sun compared to May.. lowest southern FL will drop is to 60%, where as here in Northern VA, we're at 60% now and in the heart of darkness, we drop below 50%).
In general, the leaves look good, but the the yellowing tips on the dark green leaves that I think I see, doesn't seem to be low light drop that I've experienced.

Oh gee! Thanks. We're in the midst of Los Angeles, upper parts in the hills. Our yard is open to sun pretty much all day (I have other plants struggling because of that). Because of that, since it's my favorite, I planted our BO closer to the dwarf lemon tree hoping the lemon will protect a young Blood Orange just long enough to establish roots and overgrow it eventually.

Citrus in general love full sun (finger limes being the exception that i'm aware of - they like partial).. If it's been in ground for 5 months, it should be fully acclimated. How close is it to your lemon.. is that two plants (your BO and lemon) in the one picture?

My BOs (Moro is my primary, Sang is secondary) love sun, and thrive in full sun and heat here (hitting 100+ in summer on occasions on the east coast).

If your base soil is like San Diego, it's sandy, so super good drainage. But your primary soil around the plants could contribute to problems, whether from packed soil or bad pH.

I agree with the others that it generally looks healthy. If that is two plants in one picture, I'd move them apart. They'll be at need at least 5-6 foot diameter even on dwarf stock (unless you don't want the lemon, then I'd cut that as it's competing for nutrients).

Quick add - looked up LA... you're about 65% peak sun right now (assuming no obstructions).

Fruity Paws, thank you so much for such a detailed comment. We have a difficult soil, it's true. I don't even know how discribe it- kind of rock and sand in one. What would be the easiest way to measure the pH..

There's no other tree in the picture, and yes I try to keep at least 6-8 ft in between trees.

Thank you again so much for your reply.

You can order a soil ph test kit online (or pickup at many big garden centers), then you just fill the appropriate amount of soil then distilled water, then put in the test strip.