Why is my clemtines leaves a little yellow tinge, and some of the older leaves look like they are going to fall off, none of my other citrus seedlings have this problem. Whats wrong?(pics are big so you can hopfully get a better idea)

please can any help, is it a lack of nutrients or what there are not green veins it just seems to be a more yellow tinge. I don't want to lose this one.

Derek, looking at your Clementines, I do not think you have much to worry about. I believe it is just winter color. Many of my Clementine seedlings have much the same coloration, other varieties like Satsumas are much darker green. They should green up come summer. You might check the soil temperature. At soil temperatures below 60F (16C) citrus's ability to take up nitrogen, and other nutrients, drops 60 percent. I think they will be fine, but it is always prudent to keep an eye on them just to be sure. - Millet

thanks well if yours are a little less green in your greenhouse than that takes some worry of me, and also those seeds you sent an owari is sprouting so i am excited.