Ask a Question forum: What are these galls?

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Name: Deb
Pacific NW (Zone 8b)
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Bonehead
Aug 6, 2017 2:28 PM CST
Eucalyptus cinerea. Marginally hardy for me, this is the 2nd summer for this plant (I kept it in the basement over the winter). It has not put on much growth this year and has developed these round galls on the trunk near the soil level. Any idea what these are?

Thumb of 2017-08-06/Bonehead/b51123
Thumb of 2017-08-06/Bonehead/ab5829

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Name: Sharon Rose
Grapevine, TX (Zone 8a)
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Altheabyanothername
Aug 7, 2017 10:37 PM CST
Deb- - they look like gall. Now what is causing it? There is a wasp that causes it on Eucalyptus. Maybe someone else with more expertise will come along. Sorry I could not be more helpful.

May you be blessed with good help!
I prefer to walk in the light, I prefer a world where people want to be kind and bless each other, I prefer a God who loves and shares so much that he gave up his only Son for me. I prefer to choose the God of Abraham. Let there be peace and let it begin with me.
Name: Sharon Rose
Grapevine, TX (Zone 8a)
Grace of the Lord Jesus be with all
Daylilies Composter Cottage Gardener Hibiscus Enjoys or suffers hot summers Zinnias
Salvias Bulbs Amaryllis Lilies Clematis Region: Texas
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Altheabyanothername
Aug 8, 2017 2:51 AM CST
Deb-- You have two good pictures there. Why don't you find out if you can submit them to your county extension office. I keep telling myself I have seen something like that just recently. I have been dealing with nematodes. I keep dismissing nematodes because it's in a pot. Potting soil I presume. Your county extension office would have the best ideas to which parasites are in your area.

May you be blessed with good help!
I prefer to walk in the light, I prefer a world where people want to be kind and bless each other, I prefer a God who loves and shares so much that he gave up his only Son for me. I prefer to choose the God of Abraham. Let there be peace and let it begin with me.
Name: Sue
Ontario, Canada (Zone 4a)
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sooby
Aug 8, 2017 4:08 AM CST
Deb, compare with pictures of "crown gall" caused by Agrobacterium tumefaciens. It would be a good idea to check with the Extension office though.

Sharon, you can get nematodes in potted plants, e.g. if the pot has been set on the ground, or the potting mix contained infested medium.
Name: Deb
Pacific NW (Zone 8b)
Region: Pacific Northwest Organic Gardener Deer Ferns Herbs Dragonflies
Spiders! Dog Lover Keeper of Poultry Birds Fruit Growers Million Pollinator Garden Challenge
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Bonehead
Aug 8, 2017 8:36 AM CST
Yeah, that's what it looks like. Seems the 'cure' is to ditch the entire plant and all the soil. Plus I suppose wash the pot with bleach. Guess I'm just not lucky with eucalyptus - this is my 3rd attempt. But, I can at least harvest the leaves.
I want to live in a world where the chicken can cross the road without its motives being questioned.

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