Seldom does a virus affect all the plants in a garden/field. Yes, it's possible, but extremely unlikely. I wonder about two things: 1. Herbicide drift from anywhere nearby, possibly even next door. 2. If you use manures or compost, where you might have obtained it. The question here is this: is it contaminated w/ herbicide? Take a look at this info about contaminated organic matter (manures and/or compost), then do the bio-assay as described to rule out clopyralid and several related herbicides: http://puyallup.wsu.edu/soilmgmt/Clopyralid.html Here is a link that might be useful: rule out clopyralid

I was going to be making my mulch bed bigger this weekend actually but I didn't realize temps were going to be near 100 degrees so I put that off until it cools down a bit...good to know this doesn't look that bad

@rhizo_1 The Miracle Gro bloom booster I am using, has a 15-30-15 N-P-K ratio, so it's not really a hardcore "bloom booster" I think, but just has double the phosphates. I am using LED lights that emit red and blue wavelengths. @ken_adrian The plants are about a foot away from the lights. I didn't think they need to be any closer than that, since these LED lights emit the optimal wavelengths, and being a foot away provides the greatest coverage. Growth has indeed been slow, but still visible, with new growth, buds and flowers, since I got them from the nursery. It's just that the new growth and foliage, are turning light green to yellow. The potting media did not have any ferts, and I was just following the directions on the label, which suggests applications every 7-14 days. But I can cut it down to 50% concentration. And yes, I do saturate the media every time I water, with water running out the bottom.

I got an Oroblanco grapefruit tree this year and planted it in a pot, because they have to be wintered inside. It gets too cold in the winter here for them. I live in northern Arizona. I have it on the patio. I water it roughly twice a week, more when it was really hot; it got to 114 in late June. It has been doing relatively well, but I recently noticed some of the leaves have small yellow spots on them. Is this a fungus? We did have a fairly wet summer. The foothills are still green. The monsoon season was wetter than last year. It was supposed to be a dwarf tree, but the tag didn't say that. I thought maybe it was the water. I water it with the hose bib near it.