They have to be hardened of each spring when they go outside and have to be winter prepped in fall to come inside. The Meyer lemon takes the most prepping the other 2 can be done in the first 7 days and then put in full light. in the fall just leave them out until frost danger. The days are so short and the sun so low it can be done just taking the tree in when in threat of frost and back out when it is safe. The Meyer lemon should be put in part shade for a week then treat as the others. I have 1 Meiwa kumquat, 2 nagami kumquat, 3 sweetlee tangerine, and 3 poncirus trifoliata all grown from seed. I have had no problem bringing them in for fall. Taking them out in spring is no problem for all but the kumquat trees. The kumquat tree are a horenduss problem each year. I inheriter 2 Meyer lemon trees from cuttings. I spent the 7 days moving away from the house and an extra week at half light. No leaves dropped. Check the link below to see what I am doing. search out all of my photos, they are registered as public for all to see Good luck with your trees Here is a link that might be useful: https://plus.google.com/photos/111099372377958308731/albums/5961857381151877457?banner=pwa

Hey Mike, I sent you an email. I actually have sent you 2 emails. I know your a very busy man but if you get the chance, please read them and email me. I really like that jade. Where did you find it? IS that a Logees plant? Hmmm...don't know if I would buy it from them if it is! I still have a couple dollar credit to use. How many plumeria do you have now? What varieties are they? I wish you could see my keylime tree. This is one imprseeive citrus! Must be that they are more vigorous than most citrus. This tree is a little over a year old now and has tripled in size. The tree is finally loaded with flowers, and I mean LOADED!! Too bad they are not fragrant. Kind of strange to me. Another mis representation of Logees. They describe it as being fragrant unless my tree is some alien mutant that does not produce fragrant flowers! Oh well...the Oro Blanco makes up for it. My other Oro is still potted but cut baxck to stubs. I can't give up on it even though for it to make a comeback would take a miracle! My Meyer is doing excellent despite falling over and damaging the surface of the trunk. It is now healing and I bought this huge sand bucket at Big Lots for $5.00!! All I need to do is make some holes in the plastic for drainage and it will be all set! It has handles on it and everything!! Well now that you and zecowsay have blooms on your Oro's I am crossing my fingers that mine will bloom! I still need to post a picture of the new one. Hopefully this one will take off. The tree itself is a lot larger than the first one and it looks even healthier. Your buddy, Andrew

Could be a fungus like Vladimir said, could also be an insect egg or just dirt on a bit of fluff. However, I'm more concerned with how dusty the leaves are. I may just be dust or it could be the beginnings of a spider mite infestation. It's a good idea to wash off the leaves from time to time, like maybe every 4-6 weeks. Take them outside and hose them off, or if that's not possible, put them in the shower and shower them off with cool water. Then let them drain well and put them back where they were. It helps prevent spider mites as they're attracted to dusty plants. And your plants love the rinsing off!

Current picture of mangled vegetation on my sweetlee tangerine tree. I could not resist snapping the tree in it's early morning fog. The tree is in my greenhouse and the fog is from the vent from my water heater. I'll post another picture when the fog rolls on out of the valley (condenses on the glass). I see the same thing often on my trees. I just snap that part of the twig off just above the last reasonable leaf. I do agree that the tree has a problem, but I don't think it is disease. Seed grown sweetlee tangerine tree with the top 3 inches snapped off This post was edited by poncirusguy on Sun, Nov 23, 14 at 9:43