Dave I had a couple of roses that did 2 years ago. At first I thought it was the start of spring dwarf disease. In one case the growth never really grew much beyond what yours is showing. I finally pruned it down lower and it has been fine since. The other one never got any better I ended up shovel pruning that one. Neither ever advanced to looking like rrd. But I've also had rrd show on spring growth and when it does it gets ugly fast. We have a big time cold snap coming. This could delay your knowing just what it is.

I don't know for sure what the problem is, but I would guess the young leaves were exposed to cold too early while they were growing, and did not handle the temperature change well from inside to outside growing conditions. Also, it's hard to see from the picture, but your tree might benefit from a larger container with more root space. That soil might not be the best. Any way to add dark fertile rich soil or compost in there? Yuzu is a pretty resilient variety, and can handle or survive more problems than many others.

welcome.. straight down pix are wonky ... we dont know why ... looks like a lot of old flowers on it???? i dont understand how the second relates.. is that prior to trimming ... when did you trim them ... it is fall.. how much growth are you expecting this time of year?? ..... as sunlight declines.. and winter comes on??? .. i suspect it might be a timing issue .. but need more facts and perhaps better pix ... nothing.. otherwise healthy.. dies from pruning.. but you might not see much change until spring flush ... so dont worry about it ... ken

Thanks floral, that explains why it came up where it did, in soil taken from an old potato plot.