Vegetables and Fruit forum: Is My Blackberry Infested with Cane Borers?

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Ghadames
May 4, 2014 9:21 PM CST
Hello,

While pruning my thornless blackberry plant, I noticed these galls on its canes.

FYI, my plant is two years old. I live in southern Quebec. 2/3 of the plant was covered with snow almost the entire winter.

This gall is located at the bottom of the cane:
http://www.cheapvoipequipment....

This one is located in the middle on a different cane:
http://www.cheapvoipequipment....

I only have two strong big canes and a skinny one. Can someone explain exactly what they are, and if I should do something about them?

Extra info:

Last summer, cane borers attacked my raspberry plants. I was able to cut off the tilted tips and save the canes. The source of the problem was a small sick tree nearby that was infested with aphids and other insects. I saw borers too. After I removed the tree, no more tilted tips.

They might have laid eggs on my blackberry canes, but I did not see any tilted tips. I check my plants almost everyday during summer.
Name: Carole
Clarksville, TN (Zone 6b)
Charter ATP Member Garden Sages Plant Identifier I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar
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SongofJoy
May 5, 2014 1:44 AM CST
Hi Ghadames. It looks like it could be borers. I am not an expert on them so I will be interested to see what others have to say.
I garden for the pollinators.
Name: Glen Ingram
Macleay Is, Qld, Australia (Zone 12a)
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Gleni
May 5, 2014 1:44 AM CST
Welcome to ATP Ghadames. Welcome!

Ghadames
May 6, 2014 8:37 PM CST
Thanks, Gleni! Can anyone confirm that they are borers. And tell me exactly what needs to be done?
Name: Carole
Clarksville, TN (Zone 6b)
Charter ATP Member Garden Sages Plant Identifier I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar
Garden Ideas: Master Level Celebrating Gardening: 2015 Cat Lover Birds Lover of wildlife (Raccoon badge) Avid Green Pages Reviewer
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SongofJoy
May 7, 2014 6:06 AM CST
Can you say where you are located? Certain sprays and treatments are banned in some states.
I garden for the pollinators.

Ghadames
May 7, 2014 12:49 PM CST
Just outside of Montreal in Quebec, Canada.

Ghadames
May 8, 2014 10:07 PM CST
Assuming that these are indeed cane borers, which most likely they are. What should I do at this point to save the plant? Can't I just remove the galls and everything above them? Is it only one insect that it is inside each cane, or is there a population of them inside the plant? I've read articles on cane borers, but it's not clear. Why would I need an insecticide?
[Last edited by Ghadames - May 8, 2014 10:07 PM (+)]
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Name: Carole
Clarksville, TN (Zone 6b)
Charter ATP Member Garden Sages Plant Identifier I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar
Garden Ideas: Master Level Celebrating Gardening: 2015 Cat Lover Birds Lover of wildlife (Raccoon badge) Avid Green Pages Reviewer
Image
SongofJoy
May 9, 2014 5:28 AM CST
I'm not sure it's as simple as pruning them out.

This may not be the borer you have but here is a good article about infestations and how they are treated. I would see if I could find someone locally who has experience with this in your area, perhaps a part of the Agriculture Dept. or such.

http://www2.ca.uky.edu/entomol...
I garden for the pollinators.

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