Brand New Rose Standards Wilting

[Sudhira]

I purchased 2 rose standards "Hot Cocoa" ( Weeks Roses ) approx 1.5 weeks ago, all was looking great until the past few days. I placed them in large TC pots ( left them in their peat containers ), watered them in well and gave them a dose of Bayer All in One ( I could see some rust on the bottom leaves ). We have had cooler temps and some showers the last few days. The standards are in sun for 6+ hours a day ( when the sun is out ). There is good air circulation. The wilt is on the new growth, help help...

Thank you

[Marlingardener]

I am not sure, but it may be that they are root bound. Peat containers don't break down as easily as advertised. Could you lift one rose, cut the peat container off, and see if the roots are running in circles? If so, spread the roots out, replace in the large planting pot without the peat pot, and do the same with the other rose. Keep them in partial shade for a few days and well-watered but not soggy.
I hope someone else will be able to give you a more definitive answer.