Roses forum: Do these leaves show disease?

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Β SoCal - Sunset zone 23β˜€οΈ (Zone 10a)
Region: California Adeniums Hummingbirder Dragonflies Butterflies Cactus and Succulents
Native Plants and Wildflowers Roses Herbs Garden Art Garden Photography
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_Bleu_
Nov 23, 2018 10:16 PM CST
Me again, sorry for being a pest about my two new climbing roses but I just want to make sure that I act quickly if they need help.

The America rose leaves:

Thumb of 2018-11-24/_Bleu_/10c3a4
Thumb of 2018-11-24/_Bleu_/74d0d3

And the other climber, a single rose whose name I do not know (it came mislabeled):

Thumb of 2018-11-24/_Bleu_/9b4520
Thumb of 2018-11-24/_Bleu_/0c7869

I was asked in another thread if the roses looked thirsty when I received them. I don't know if these roses had been properly hydrated. The nursery (Armstrong) must've watered all the plants I ordered the day they were delivered because water dripped from the pots as the driver walked them into my garden. I was at the nursery the day before choosing the plants and did not pay attention to the soil in the pots, I must admit *Blush* but the roots of all plants were in very good shape, not bound at all.

Wednesday we had our first rain in a couple of months and it was a nice downpour. I plan on watering on a weekly basis from now on (temps will continue to be in the 65-75 range during the day).

I also drenched the soil with a dilution of SuperThrive and BioAg after putting them in the ground, a few days ago (I don't know if this was really necessary because I had amended the soil but I did the same a while ago for other plants and it seemed to be beneficial - well, I don't know, they all looked very happy but maybe it wasn't because of the drench. In any case, it didn't seem to cause any damage).

There seems to be some insect damage on some of the leaves but if you think the leaves also show disease symptoms, please let me know what I can use to help the plants. Thanks!

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Name: seil
St Clair Shores, MI (Zone 6a)
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seilMI
Nov 23, 2018 11:10 PM CST
I don't really see any disease there. You do have insect damage, In your last picture I can see the tell tale signs of leaf cutter bees. That's the two big half circles. Leaf cutters are good guys in the garden . So don't worry about them. Your leaves also do look a little dehydrated and travel battered but otherwise I don't see a disease problem. Where were the leaves? On the top or the bottom of the plant? They could just be old leaves that are dying off if they were on the bottom.
Coastal Southern California (Zone 13a)
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jerijen
Nov 24, 2018 3:14 PM CST
Agree (no suprise!) with Seil. But one caution. Don't fertilize newly planted roses. PARTICULARLY don't fertilize them before your winter hits!
Β SoCal - Sunset zone 23β˜€οΈ (Zone 10a)
Region: California Adeniums Hummingbirder Dragonflies Butterflies Cactus and Succulents
Native Plants and Wildflowers Roses Herbs Garden Art Garden Photography
Image
_Bleu_
Nov 24, 2018 6:27 PM CST
Seil, thanks for the advice. Smiling I had no idea that leafcutters were considered good guys. Will have to google that to learn why.

I think I took the leaves from the middle and top of the plant.

Jerijen, I applied the last round of fertilizer to all the plants in my garden about a month ago. I won't do it again until the spring.
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Name: Porkpal
Richmond, TX
Charter ATP Member I was one of the first 300 contributors to the plant database! Keeper of Poultry Farmer Roses Raises cows
Garden Ideas: Level 2 Celebrating Gardening: 2015 Plant Identifier
porkpal
Nov 24, 2018 7:25 PM CST
Leaf cutter bees are good; leaf cutter ants - not so much.
Porkpal
Name: seil
St Clair Shores, MI (Zone 6a)
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seilMI
Nov 24, 2018 7:28 PM CST
Never heard of leaf cutter ants. Will check those out.
Name: Carol
Alberta, Canada (Zone 3b)
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Canadian_Rose
Nov 28, 2018 1:08 PM CST
Bleu - Leaf cutter bees aren't good for your roses. But they're not bad either unless they take skeletonize the bush...I've never experienced that. It's just that bees are so important that most people don't care if they take some leaves....most of us feel quite honored to be able to help out the bees this way. Smiling
Β SoCal - Sunset zone 23β˜€οΈ (Zone 10a)
Region: California Adeniums Hummingbirder Dragonflies Butterflies Cactus and Succulents
Native Plants and Wildflowers Roses Herbs Garden Art Garden Photography
Image
_Bleu_
Nov 28, 2018 2:13 PM CST
Thanks, Carol. Smiling

How do you recognize if the damage was caused by bees or leafcutter ants?
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Name: Porkpal
Richmond, TX
Charter ATP Member I was one of the first 300 contributors to the plant database! Keeper of Poultry Farmer Roses Raises cows
Garden Ideas: Level 2 Celebrating Gardening: 2015 Plant Identifier
porkpal
Nov 28, 2018 2:21 PM CST
The bees just make cute little round holes in the leaves. The ants cut the entire leaf off, then slice it up and carry home the pieces. They will eventually denude a favorite plant - often over night.
Porkpal
Β SoCal - Sunset zone 23β˜€οΈ (Zone 10a)
Region: California Adeniums Hummingbirder Dragonflies Butterflies Cactus and Succulents
Native Plants and Wildflowers Roses Herbs Garden Art Garden Photography
Image
_Bleu_
Nov 28, 2018 2:28 PM CST
And I never knew bees ate leaves. How interesting! πŸ’›πŸ
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Name: Christopher
New Brunswick, NJ, USA (Zone 7a)
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AquaEyes
Nov 28, 2018 5:23 PM CST
They don't eat the leaves. They use the pieces to line their nests.

:-)

~Christopher
Name: seil
St Clair Shores, MI (Zone 6a)
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seilMI
Nov 28, 2018 5:54 PM CST
Leaf cutter bees are thought to eat bad bugs like aphids and mites. And as AquaEyes said, they use the leaf pieces to build their nests. You can tell their work by how nearly perfect their cuts are. They don't really harm the roses. Even the leaves with the holes will stay green and continue to feed the plant.


Thumb of 2018-11-28/seilMI/6dc75c

They can be near perfect circles or the usually larger ovals. In my yard they tend to pick out one or two plants each season and leave the rest alone. They nest in the ground so maybe they pick one near their nesting site. I actually look forward to seeing which rose they'll chose each season. I've never actually seen one at work but would sure love to because they fascinate me!

Β SoCal - Sunset zone 23β˜€οΈ (Zone 10a)
Region: California Adeniums Hummingbirder Dragonflies Butterflies Cactus and Succulents
Native Plants and Wildflowers Roses Herbs Garden Art Garden Photography
Image
_Bleu_
Nov 29, 2018 12:26 AM CST
Thank You! for the information Christopher and Seil. I too would love to see those bees at work. Smiling 🐝
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Name: Carol
Alberta, Canada (Zone 3b)
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Canadian_Rose
Nov 30, 2018 3:26 AM CST
You can google about them...I love watching clips of leaf cutter bees. They are quite quick at cutting the leaves. I tried to "raise" them. I ordered some leaf cutter bee cocoons and watched them hatch. They are so gentle that I got them too climb onto my finger and I could pet them. Unfortunately we have lots of ants, and they came and carried off the young bees and the cocoons. Totally grossed me out. Never did it again. Sad
Β SoCal - Sunset zone 23β˜€οΈ (Zone 10a)
Region: California Adeniums Hummingbirder Dragonflies Butterflies Cactus and Succulents
Native Plants and Wildflowers Roses Herbs Garden Art Garden Photography
Image
_Bleu_
Nov 30, 2018 1:15 PM CST
Oh, no! Poor lil ones. I will google that now, can't wait to see it. We have tons of ants here too and I've read that scientists think that there's a giant ant nest under our area 😳 so no bee cocoons but, oh how I'd love to watch them hatch and pet them! Smiling
πŸŒ±πŸ„πŸŒ΅πŸŒΉπŸŒΆπŸ πŸ¦ŽπŸ¦‹ πŸ¦†β›°πŸβ›΅οΈπŸŽ¨
Name: Carol
Alberta, Canada (Zone 3b)
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Canadian_Rose
Dec 2, 2018 6:09 PM CST
I know!! They were adorable!! I was soooo looking forward to overwintering cocoons in my garage, etc. Oh well...stupid ants! A giant ant nest under your area...wow!! I wonder how big the ant nest in my yard is. D'Oh!

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