Roses forum→My Rose Needs Serious Help

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California
eemeals
May 30, 2020 12:04 PM CST
I recently bought a climbing rose and it seemed to be doing fine for a short period of time until a family member moved the pot into a sunnier spot. I am usually familiar with plant issues, but I have never owned a rose before. I am suspecting sunburn or some sort of bacterial caused by sun exposure. This happened in the span of about three days. Any ideas on what this plant's problem is? I have since moved it back to its shadier spot and will continue to care for it as I previously did. Also note that the leaves that have died are very crunchy, not soft.

Any advice is greatly appreciated! Reposting because I originally put it into the wrong forum, I hope this is okay. I have not been able to get any answers anywhere.

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Coastal Southern California (Zone 13a)
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jerijen
May 30, 2020 2:40 PM CST
Hi EE .... Where in CA are you located? And what size pot is that rose planted in?

Generally speaking, a Climbing rose isn't suitable for pot planting. You CAN do it -- but it's not easy. A climber really needs to be in the ground.

In any case, those leaves aren't going to recover. Ever. I think if it were me, I'd leave them on the plant until they fall off on their own. The canes look OK, which is more important.

Conventional rose wisdom is that roses need 8 hours of sun a day. But in most of California, that's really too much. I've found that roses will flourish with morning sun and afternoon shade. In fact, folks in Arizona, and Las Vegas, often make shadecloth tents to protect roses.
Name: seil
St Clair Shores, MI (Zone 6a)
Roses Garden Photography Region: Michigan
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seilMI
May 30, 2020 4:25 PM CST
As Jeri said, knowing where you live and what the weather conditions have been like is important information in trying to make a diagnosis. Is the white on the leaves a film? Can you rub it off? If so it looks like powdery mildew. That is not bacterial but fungal. There are many fungicides on the market. Pick one you feel comfortable with and follow the directions carefully. The reason for leaving the leaves alone is to protect the bare canes from sunburn in hot sunny places. As new leaves grow out they will push off the dead ones. Keep them cleaned up from the top of the soil as they fall off. If you decide to spray, spray the soil as well as the plant and always spray upwards to get the undersides of the leaves as well as the tops. And never spray anything but plain water on days that are over 75 degrees and very sunny. Even just soapy water can burn leaves on bright sunny hot days.
California
eemeals
May 31, 2020 10:02 PM CST
Thank you both so much! I am currently in the Bay Area and it has been around the high 90s this past week. I just moved here so I am not very familiar with the heat yet, back where I previously lived it was much cooler and plants did not have to be watered as much. The white material is not a film, and the leaves are very crunchy. Thankfully the plant is trying to bloom on some stalks! I will hopefully see if I can plant it in the ground tomorrow. Again, thank you so much for the help. I will also buy a fungicide---just in case---as well.

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