| Hello Gardencraze, David Austin roses do supremely well here in Utah. I have a bunch and they are all disease free, we don't have a much blackspot pressure here anyway, but they certainly don't mildew. The main thing to know about Austins here are that they almost always are grow bigger than advertised. I have the first three you list and all can be large shrubs or climbers in this climate. Some of the more delicately colored ones can benefit from some afternoon shade to preserve the color longer. A Shropshire lad is has very strong thick canes, so if you are trying to train it, it might be easier when canes are young. Abraham Darby's canes are quite flexible as are those of Crocus rose. They generally don't last long as cut roses if that is important to you. I happen to think Crocus Rose has one of the most beautiful blooms of any rose and Abraham Darby is so fragrant- in full bloom it takes my breath away. I hope some of this info helps. | 
