Thanks for the article.
None of my roses bloomed this summer - not after a few dribs and drabs in June, but since I've never had roses bloom in the summer I ignored it. None of my roses grew much in the summer, but it wasn't until late August that I really got a clue.
One clue was that Rosarium Utersen lost all its leaves mid summer. I would have dug it up if I'd had a replacement to put there. But I didn't. I started doubling water rations at the start of the fourth week in August. A month later most of my roses are putting out new growth. And after two or three months without leaves RU has pea-sized dark green leaves the length of the cane.
I've never known roses to get quite that dormant in hot weather, but it seems like a remarkably useful trait for roses growing where spring and fall are long and pleasant, but summer is almost intolerably hot and dry. It improved my already high opinion of Rosarium Utersen.
