@Millet, Thanks for the reply! I planted this just about a year ago from a 3 gallon pot. Maybe I’ll give it a little more time and see if this split bark heals. (I gave it some fertilizer last week.) We did have a long dry spell, followed by a cold snap at the end of Feb., so I was wondering if that could have contributed to this damage. But it only got down to the high 20s, so it’s hard to imagine that damaging a citrange.