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What disease is this?

Posted by Safa1 none (My Page) on
Sat, Jul 19, 14 at 21:54

My Double Delight rose is getting some of its ;eaves turned red from the tip - it has happened on my other roses before too- is this a watering issue ora disease?
Many thanks


Follow-Up Postings:

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RE: What disease is this?

  • Posted by seil z6b MI (My Page) on
    Sun, Jul 20, 14 at 12:03

Where are you at? At least what zone? Has it been very hot where you are? It looks like burn to me. If not from heat maybe from spraying something?


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RE: What disease is this?

I am in Palo Alto, in Silicon Valley - Zone 9. I haven;t sprayed it recently, and though it has been a little hot, I think it get enough water (daily).


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RE: What disease is this?

Too much fertilizer? I don't really know--just guessing.

Kate


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RE: What disease is this?

  • Posted by campv Arizona 8b (My Page) on
    Sun, Jul 20, 14 at 16:16

My two DD's look like that and it is heat this time of year. I find leaves on DD to be highly sensitive to just about everything. Sun and heat.


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RE: What disease is this?

  • Posted by hoovb z9 Southern CA (My Page) on
    Mon, Jul 21, 14 at 10:57

That's undoubtedly sunburn. When heat waves are predicted, give your rose a soaking at the roots on the first day of the heat spell. That will help.


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RE: What disease is this?

Did you fertilize recently? If so, flush the soil with plenty of water. Excess nitrogen in ammonium form produces this look. Heat, scant water, and fertilizer can all contribute to burn. The plant will recover.


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