Moje Hammarberg has been a reliable "baby" producer for me, growing new roses off roots. I bought my first one maybe ten years ago at a local botanical garden plant sale and have been potting up and giving away "babies" ever since. It does tend to go into dormancy in winter and take longer to show new growth in the spring than my other rose classes (minis, floribundas, polyanthas, a few OGRs) which I found surprising since Hybrid Rugosa are known to be cold hardy. The only thing I can figure is that here in the south (North Alabama, zone 7, now zone 8??), maybe it gets too warm for them and they need a resting period? Just a guess, but mine reliably returns in the spring. I will say that the other classes I have don't tend to go dormant. We had some nasty hard freezes last winter (Dec. 2022, Jan. & Feb. 2023). Some of my roses lost more canes than usual but all came back, even the two minis that died down to soil level! (in pots)
