Evan, I've got flower buds, not yet open. I will probably try and let one of the six buds bloom and get ripe (assuming I can paintbrush pollinate the flowers successfully). I got this as a very young twig graft from Stan McKenzie this spring. I had seen he had acquired a red finger lime which had one or two fruit on last year during a visit to his farm during the fall, so I beat feet back when I knew he had this (which was his first graft from that plant). Mine cost $20 from Stan (no shipping since I was in person picking the baby up). I'm sure it will take a few more years to reach Evan's plant size, but that works for me, since I have to haul my tropicals in for winters!

Out of curiosity, I did a quick Google and the very first hit was https://backyardcitrustrees.com/products/australianfingerlime They're based in Florida. Indeed, they won’t ship anywhere else.

Hey everyone, just thought I'd bring back an update. So I've been caring for the plant as much as I can, and I am still not seeing great results. Much of the tree continues to brown and die (stem included), though a few new sprouts have come in. These sprouts have purple leaves. I have a few other plants in the house, and they are also pretty young. They are facing a similar issue where they are browning and wilting. I have tried killing the bugs with home made sprays (still nothing store bought), but again, I haven't been sure if it's the microscopic bug that people have mentioned. I also purchased a moisture and PH gauge. I have been able to maintain a 4-6 moisture level (on a scale of ten). The PH gauge, however, reads 8 (the max on the meter) on ALL of my plants. I have only added lime to one plant, and only because of the 5-1-1 recipe that I read about. Could this be the issue? Maybe my water is causing the soil to become basic? Or do we still suspect bugs? Any insight would be appreciated! I'd be pretty bummed if I couldn't keep plants because of this. For reference, here are 2 of the other plants as of this evening (a kumquat plant and a mint plant):

Finger limes, coming from a desert climate in Australia, are drought tolerant, so I would expect they probably root easily. Use transparent plastic wrap to cover a large plastic container, to hold in the humidity, that will help them root. However, there are some reasons to have them on rootstock. I don't know if that is specifically the case here, but typically fruit trees not on rootstock will take a long time and have to get to a very big tree size before they begin fruiting.