Home > Question >

How do I prevent pests and diseases in dahlias?

Our Advice:

Dahlias are susceptible to a variety of pests and diseases, including aphids, spider mites, powdery mildew, and stem rot. To prevent these issues, keep the plants healthy and well-watered, remove any infected or damaged foliage, and apply insecticidal soap or neem oil as needed.

This video may also help:

Here are some related questions:

Not what you are looking for?

If you can't find what you are looking for on the website then you can ask one of our experts. To get in touch with us Click Here

We will try to get back to you with an answer as soon as we can.

Here is some more information for you:

Did you find this answer useful? Subscribe to our newsletter for gardeing news, projects, special offers and competitions.

Ask another gardening question:

Learn More About Pests and Diseases

Gardening Projects for February

---

How to Prune

How to: Maintenance Pruning

How to pH Test Soil

How to Force Lily-of-the-Valley

Latest Gardening Videos

---

How should I overwinter a potted Canna lily?

When and how should I prune a jostaberry?

How can I get rid of a red ant nest in my lawn?

Potting Cacti

Weed Control Using Mulch

Removing a Tree

All Videos

Explore Gardens from Around the World

Gardens of Versailles
Versailles, France

The New York Botanical Garden
New York, United States

Powerscourt Gardens
Enniskerry, Co. Wicklow, Ireland

Villa d'Este Gardens
Tivoli, Italy

Royal Botanic Gardens Victoria
Melbourne, Australia

Butchart Gardens
British Columbia, Canada