I have a few Rosemary in pots, but being in Southern California where we only get minimal frost, my climate is milder than most. As others have said they dislike root work, so I tend to start them in pots fairly young, go hard on the initial rootwork, because it’s not going to like multiple reductions. Kill it or make it a bonsai, basically. They grow so fast, and root from cuttings so easily, there’s not much loss if it dies.
Theyre brittle and larger branches cannot be moved very much, so wire when green. Mine dont like being dry at all, I treat them like japanese maples. I had a nice one die when I experimented with watering it more like a black pine.
View attachment 412535
View attachment 412536