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Avatar for Tq0bv95
Oct 19, 2020 4:16 PM CST
Sydney
Dear all,

Do you know what happened to my roses?

These diseases have spread from one rose to another. I think I need to deal with it ASAP. But I don't know what caused these marks on the leaves and the proper way to solve it.

Regards,

Kate
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Oct 19, 2020 7:49 PM CST
Name: Daniel
Los Angeles (Zone 10b)
[removed]
Last edited by Dciau1 Oct 21, 2020 6:29 PM Icon for preview
Avatar for Tq0bv95
Oct 19, 2020 8:38 PM CST
Sydney
here's the front and back of the leaves
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Avatar for Tq0bv95
Oct 19, 2020 8:54 PM CST
Sydney
Thank you guys for the replies.

It starts from the new leaves. The same case for the other rose as well. I really don't want to cut the branch since there are three flowers on it. Maybe remove the leaves first?
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Oct 19, 2020 9:11 PM CST
Name: Daniel
Los Angeles (Zone 10b)
Looking at the back, it seems to be some type of insect potentially eating the leaves and causing damage but it looks like maybe rose rust as well

Anyway, I think if you don't want to cut it I would just do a fungal/insecticide spray for now to control it for now (:
Avatar for Tq0bv95
Oct 20, 2020 4:22 AM CST
Sydney
Anyway, I've removed all infected leaves and applied the pesticide and fungicide. Hope it works, finger crossed...
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Oct 20, 2020 4:46 AM CST
Name: Daniel
Los Angeles (Zone 10b)
Let me know how it goes! (:
Wishing you and your roses the best!!
Have a great day (please update us!)
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Oct 20, 2020 11:26 AM CST
Coastal Southern California (Zone 13a)
All in all, they looked pretty good. It wasn't time for panic.

Something munched on a few leaves, which otherwise didn't look bad. There may have been a few spider mites, but a garden hose was probably the best remedy. There was VERY MINOR botrytis on the blooms.

There was really no need for the chemicals.
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Oct 20, 2020 4:14 PM CST
Name: Daniel
Los Angeles (Zone 10b)
^^^
This is why I recommended waiting for a couple responses *Blush*
I apologize for my over assessment
I was clearly wrong!
I tend to be overly cautious when it comes to fungus because it spreads somewhat easily at my home :P

Anyway,
again I hope that your roses do well and have a nice day!

and Thank you for the help again Jeri (:
Last edited by Dciau1 Oct 20, 2020 4:14 PM Icon for preview
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Oct 20, 2020 5:02 PM CST
Name: seil
St Clair Shores, MI (Zone 6a)
Garden Photography Region: Michigan Roses
I agree they don't look too bad but not to worry, Daniel, nothing the OP did will kill them. They will just need a little longer to grow back new leaves but they will be fine.
Avatar for Tq0bv95
Oct 20, 2020 5:33 PM CST
Sydney
Shall I remove the spiders in my garden and give the garden a spring clean? I am a lazy gardener. There are a few spider webs and fallen leaves and different kinds of debris in my balcony. And I am in Australia, a country full of spiders. But my friend also told me spiders are good for my garden...
Avatar for Tq0bv95
Oct 20, 2020 5:52 PM CST
Sydney
Dear Daniel,

It's fine. The insects and fungi are with my roses all the time. Every time what I do is cut them all and apply the pesticides and fungicides. I hope it works this time as well.

Thank you for your replies, it makes me feel that I am not alone in the way to fight the rose diseases.

Thanks for all of the replies, I am glad that there are so many people answering my questions ~

Feeling being loved,

Kate
Avatar for CPPgardener
Oct 20, 2020 6:32 PM CST
Name: John
Pomona/Riverside CA (Zone 9a)
Leave the spiders alone they eat the bugs that eat your plants.
“That which is, is.That which happens, happens.” Douglas Adams
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Oct 20, 2020 6:55 PM CST
Name: Daniel
Los Angeles (Zone 10b)
Thank you guys (:

This was definitely a great learning experience as that is typically how I care for my roses


Anyway,
@Tq
Ahh alright! I really hope they go away (:

Please update us (:
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Oct 21, 2020 10:25 AM CST
Name: seil
St Clair Shores, MI (Zone 6a)
Garden Photography Region: Michigan Roses
Never remove spiders except for spider mites! Spiders are good guys in the garden. They take care of many of the bad bugs that destroy your plants.
Avatar for Tq0bv95
Oct 21, 2020 7:19 PM CST
Sydney
Dear all,

It doesn't work...

Spots are still happening on new leaves...


Sigh...

Kate
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Oct 21, 2020 9:13 PM CST
Name: seil
St Clair Shores, MI (Zone 6a)
Garden Photography Region: Michigan Roses
What didn't work?

You have to remember that fungicides will only prevent new and uninfected leaves from getting spots. Any existing leaves that are already infected, even if they showed no signs of infection when you sprayed, will still spot and die. It is not unusual for some leaves to continue to spot after you use a fungicide.Once all the infected leaves have died off continuing to spray at regular intervals will prevent new foliage from getting infected.
Avatar for porkpal
Oct 22, 2020 3:59 PM CST
Name: Porkpal
Richmond, TX (Zone 9a)
Cat Lover Charter ATP Member Keeper of Poultry I was one of the first 300 contributors to the plant database! Dog Lover Keeps Horses
Roses Plant Identifier Farmer Raises cows Celebrating Gardening: 2015 Garden Ideas: Level 2
The issue does not look life-threatening to me; don't panic.
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Oct 24, 2020 8:50 AM CST
Name: Anita
West Fulton, NY (Zone 5a)
"Let food be thy medicine...."
Cat Lover Dog Lover Native Plants and Wildflowers Vegetable Grower Bee Lover Herbs
Organic Gardener Frugal Gardener
When the leaves on my roses get spotted or get funky I remove all the leaves that are effected, which could sometimes mean all of them. Sometimes they grow back healthy. If not, some organic neem oil wouldn't hurt. Follow instructions. Probably have to reapply after it rains.
Its easy for me to believe in miracles when science can't explain why a blade of grass has its shape and that is just one plant and one attribute.
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Oct 24, 2020 10:37 AM CST
Name: seil
St Clair Shores, MI (Zone 6a)
Garden Photography Region: Michigan Roses
Neem or any other type of oil can be risky. If it is hot and sunny it will burn. Yes, the disease will be gone but then so will all your leaves!

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