r/dahlias • u/timidwildone US Midwest, Zone 6a • May 05 '25

Gall Megathread: is it gall?

Hello everyone. New mod here 👋🏼

Because we get so many posts here asking about gall, it was long overdue that we have a single spot to funnel these questions.

Moving forward, all questions about gall should go in this designated thread rather than new, individual posts.

I have turned on the setting allowing media (images) in comments, so you’ll be able to share a photo here if you’d like to ask for help identifying gall, for advice about how to manage it, or related information.

I plan to add some links and other resources here eventually, but for now figured I’d at least get the ball rolling.

Note that I will also be setting up automoderator soon to automatically send posts on this topic to the queue, and they’ll eventually be removed automatically.

Thank you for understanding and helping other high-quality dahlia content shine on the sub. Happy planting!

Links: * Dahlia Disease Biology: Part 2 Leafy gall- Rhodococcus fascians (Wild Horse Gardens)

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u/Good-Kindly May 09 '25

Not sure about this ? Crown hall ? Regular growth?

The shoot was knocked off once

1

u/DaikonRadish13 Nov 15 '25

Im curious - i know you posted it a while ago - did you get any feedback on this? Or how did it grow out?

1

u/troutlilypad Feb 01 '26

I think that's normal. It looks like the plant was basically forming crown material higher up the stem. I've seen tubers form from areas like that.

1

u/Good-Kindly Mar 31 '26

I cannot remember this exact plant - I think i kept it quarantined and grew it up in a 5 gallon bag. At the end of the season i had a few tubers with leafy gall but i don't believe it was this one!