(I answered on the original thread as well). I find that blooms on my established, mature Malaguena last several days even when it rains. Its bloom life is average for a modern rose.
The blooms I showed were several days old when I took
the pictures. I have no patience for roses that fall
apart right away and wouldn't still have it if it did so.
I have found that the bloom size has increased in the past year or so with maturity of the bush and are over 5 inches across.

Celeste

Ok, thanks celestialrose!

When we first started growing roses in 2007, our first rose bush was (Precious Platinum). Blooms last an average of 14 days on the bush, less in extreme heat/sun conditions.
Then, we tried Sweet Afton and it's blooms fell off the same day or the next day after they opened.:-(
It got the boot at the end of it's second season. lol
Our other roses last a average of 5-7 days on the bush.

Anyhow, thanks again for taking the time to answer!

I don't have Malaguena, but would not answer about the blooms if I did. I live two zones farther south than you, and my blooms usually blow much faster than those in the states for your zone. Your zone could be why others in more southern zones have not answered.

I like to receive information about Buck roses since I only grow Buck or heritage roses -- or a few Pioneer roses from ARE.
Sammy

Thanks Celeste...that helps.

Here is a link that might be useful: Garden Musings blog.

My Malaguena's blooms last from 3 to 5 days, depending on the weather. It blows faster on hot days than cool days.