Key limes come true to seed & will fruit in 3 years, so buy some & plant the seeds. I have (grafted) ponderosa lemon, honey murcot tangerine, baers lime (same as persian in stores) & 2 meyer lemons that are loaded w/ blossoms & baby fruits. One meyer is about ready to be picked. I also have a ponderosa (oh yum) that I started from seed 3 1/2 years ago & doing well. I also have Budha Hand citron, Meiwa kumquat, yuzu (from seed) & many flying dragon from seed about 4 yrs old. Of course, mine are all in pots in my sunroom kept at 50's F & go outside in summer.
I tried & failed at bud grafting but since I did well on my 7 in 1 apple tree & a loquat, I'd like to graft citrus again. I'll never match Joe Reals 50 in 1 citrus tree LOL, but I have a 2 1/2 ft F.D. with a lot of branches to graft on!
Go for it...growing citrus is fun - esp when you get fruit - like bananas.
