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Arizona Gardening Ask The Yard Doctor Roses

What is this growing on my hybrid tea rose bush

5 years ago

last modified: 5 years ago

I found this growing on my hybrid tea rose bush. I have no clue what it is. Please help. Mesa, AZ

Featured Answer

stillanntn6b

5 years ago

If you cut into it, you may find small white worm-like creatures. From the size of that, you may have a bunch of them.

They are called mossy rose galls and are not that common on HTs and are more common in states to the north of you and me.

Here's a link with lots of pictures

https://www.google.com/search?hl=en&tbm=isch&source=hp&biw=995&bih=645&ei=kp2IW426MJGUtQWhv7LICQ&q=mossy+rose+galls&oq=rose+galls&gs_l=img.1.1.0j0i5i30j0i8i30.4343.6172..10537...0.0..0.92.803.10......0....1..gws-wiz-img.FKnu_xUZWaE

These things have been known a long time, although not well understood. There are some really strange uses of them that have no scientific support at all.

I'd suggest removal and destruction as they can spread in a garden and I lost a R. eglanteria because I wanted to see how the rose lived with them (the answer was not well at all).

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Comments (10)

Sun2shinie, Arkansas z7a
5 years ago
last modified: 5 years ago
Hi Franklin.

I think that’s called proliferation? BUT I’m very very new at this. You should wait for the much more experienced rose folks to come along.

It may be helpful for them to see other current pictures of your hybrid tea. Perhaps a more broad view of the area in question. They might also need to know the variety.

My comment should bump your question up too.

Good luck!

Shannon
Franklin thanked Sun2shinie, Arkansas z7a
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Lisa Adams
5 years ago
Super interesting, Ann. Thanks for posting the link. I’ve never seen anything like it. Nasty looking larvae in there..... Lisa
Franklin thanked Lisa Adams
Franklin
Original Author
5 years ago
last modified: 5 years ago

This is the second one that has grown on this bush since my original post in August. I cut them open and did not see any larva.
Franklin
Original Author
5 years ago
oldrosarian
5 years ago
When the mother bee lays her eggs, she disrupts the rose hormones. So as the larvae eats, it distorts the green growth. The wasps are the good guys and eat tiny insects in the garden. Also called Robin's Pin Cushion.
Kristine LeGault 8a pnw
5 years ago
Franklin, I had a bunch of those on my Savannah. I eventually shovel prunned that rose, it was a thorn in my side.
George Vance
5 years ago
The most popular variety of rose, hybrid teas are the result of a hybridization of a Tea rose and a Hybrid Perpetual. Hybrid Tea Roses are excellent garden plants suitable for cutting, single plantings, or in mixed beds with other perennials, shrubs and roses. With large, well-formed blooms and upright, sturdy canes, they are most popular as cut flowers. ..
hugogurll
5 years ago
What's the variety? I'm betting it's from Kordes.
User
5 years ago
Why? rose gall wasps don't have brand loyalty.

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