To the above excellent advice, I would add the following: 1. Any Mexican/Key lime grafts will be *significantly* less hardy than the "Meyer" lemon stock. So any grafts would probably do better if they were protected by "Meyer" lemon growth above -- such growth would tend to act as a protective umbrella during freezes. However, as mentioned above, the grafts would probably be less vigorous than the "Meyer" branches and shoots. So the best practice would be to graft the lime onto apically dominant stock shoots. The problem is, of course, that the most apically dominant portions of your existing tree will be found at the top of the plant! So you need to find a balance. You might, for example, find a vigorous, watersprout-type shoot, and then trace it down to its base, cut it off low, and put a graft on there. (Or, if you prefer, t-bud some lime down there, and then cut the shoot off.) 2. Meyer lemons are quite ornamental. Mexican/Key limes are much less attractive. They're rather twiggy/scrubby in appearance. Even if you like that look, any lime grafts would be quite difference in appearance than the stock plant growth -- so they would probably stand out, and might mar the ornamental value of your tree. The ideal way to get around this is to put the lime grafts on whichever side of the "Meyer" that is least visible from your house or yard.

That doesn't look like a graft line to me. The leaves also appear to look identical to leaves higher up. Many Meyer lemons are growing as cuttings, so there will be no graft line. Patty S.

The thing with Meyer Lemons is that when they have tristeza, they show no symptoms or ill effect. However, the tree spreads the virus to other citrus trees which wipes those out. Improved Meyer Lemons have been sold exclusively since the 70s.

I have had good results with cuttings from lemon, about 2 months ago i cut back branches on one of my trees, took all the bits and tryed to root them, 90+% of the lemon cuttings are growing, i have also tried mandarin and calamondin since, none rooted I used a small plastic frame they sell as a greenhouse..., shelves with a plastic bag over it in reality, it was in the house in a bay window for the sun to heat the air, a piece of tissue paper to shield the sun from the plants The cuttings were all about a foot tall, i just cut the bottom off each just below a leaf node, left all the leaves on,i dabbed rooting gel on the end and pushed it into a pot of perlite, watered it, then left it in the greenhouse (tent shelf) it was at 25 deg C for about a month , i sprayed the leaves everyday to keep them wet, after a month i looked and they had rooted 2 inch around and new growth was starting Out of 30 about 28 rooted from the lemon, none from the mandarin or calamondin The cuttings i used were fairly new growth, it was green color but hard, not brand new soft growth