Maybe poor drainage?

Thanks Totoro, but the roses are on raised beds in purchased rose soil, and it does seem to drain very well.

Rosedom (is that even a word? - for "the world of roses") certainly could use flow charts to deal with diagnostic dilemmas such as this.

Why are rosedom's overseers and thought leaders so late to the game? Or is no one in charge?

Or do such diagnostic aids already exist?

This is not brain surgery. Right?

Does it all come down to money?

Moses, it is good to know that. Mine also turn like BenT ' s rose.

I was about to Google when I saw this thread. Thanks, BenT and Moses

Jin

It appears that rifis is wondering why there are not more comments.

Since the thread starter has stated that mancozeb was used, I will add this link (which rifis contributed to):

https://www.houzz.com/discussions/mancozeb-information-dsvw-vd~4747168?n=4

BenT

When leaves turn yellow from the bottom of the bush , I think it is a sign of over watering . They are not getting enough oxygen . Happens to me when we have daily rains .

Thanks everyone for the replies.

Moses, you not only offer advice, but wisdom and perspective. I always look forward to your replies.

Pink rose and Totoro,

I’ve given it more thought, I think you’re both right. The roses were a bit overwhelmed by the sudden deluge of water (and weather change), didn’t get their oxygen, got stressed by sudden cold, and the leaves turned yellow. There is a bit a blackspot, but I think it’s secondary...the leaves were weakened by the other conditions, so some blackspot caught on.

Jin

Thanks for sharing, good to know I’m not the only one. Hope both our roses recover nicely :)

After plucking off some yellow leaves, now looking at them in the warm sun, it doesn’t look quite so bad. I had come back from an especially stressful work trip, and seeing the yellow leaves really got the best of me.

Here’s to a happy Spring, everyone.

Texas Ben,

Your roses look lush! Nice raised bed....are those bricks or stones mortared there as the front bed wall? Is that a weeping flowering crab tree? Big blue skies over Texas.....very uplifting!

Moses

Thanks for all your support, Moses. I’m very fortunate to have a forum friend like you. The raised bed is made of mortared Austin Stone, which is a common limestone in these parts. The tree is a Weeping Peach, I grow many cheerful spring shrubs, but it’s my favorite: