Dahlia Tuber Disease

If you suspect your dahlia tuber is diseased, we recommend having them tested to confirm your diagnosis before disposing of your tuber stock. Symptoms of disease can mimic signs of other problems, and oftentimes there's a lot you can do to remediate a situation before throwing away your entire plant stock.

Keeping your Plants Healthy

A healthy garden starts with pest and disease prevention. Insects like aphids and thrips spread viruses, so regular pest control is essential. Treating regularly with an insecticide can help prevent problems before they arise.

Oregon State University Lab Results

Additional Resources

The Lowdown on Leafy Gall by Melodie Putnam

Is it Crown Call or Leafy Gall? by Melodie Putnam and Marilyn Miller

Growing Dahlias by Iowa State Extension & Outreach

Dahlia Mosaic Virus on Dahlia by Utah State University