Dahlia University

Each of the courses listed below covers a single topic pertinent to growing beautiful dahlias.

These courses have been written by dahlia enthusiasts, not necessarily scientists or horticulturalists. These enthusiasts are pleased to share their experience and best practices with you. Please keep in mind that there are a variety of opinions in the dahlia community and that different solutions and procedures work in different circumstances and locales. We urge you to participate in a local society where you will meet great growers with knowledge of growing dahlias in your area…and you’ll have fun!



Preparing for a Dahlia Garden
Early Season Dahlia Hints
Starting Tubers
Putting Your Dahlias Down for a Long Winter’s Nap (a Pictorial)
Planting and Staking
Supporting Dahlias
Fertilizing, Bug and Disease Control
Grooming (includes topping, disbudding, and disbranching)
Putting Your Dahlias Down for a Long Winter’s Nap (a Pictorial)

Understanding Dahlia Forms
Understanding ADS Classification Numbers

Assigning Colors
Learn About Hybridization of Dahlias (video)

Growing Dahlias in Containers



Digging, Dividing, and Storing Tubers
The Saran Wrap Tuber Storage Method



Get inspired with these videos from Kristine Albrecht, ADS member and ADS Genome Project Leader

Grow Dahlias in Pots
Dahlia Cuttings
Starting Dahlias from Seeds
More on Starting Dahlias from Seed
Growing Seedlings in 4″ Pots
A Fun Look at Staking Dahlias
An Innovating Way to Stake Dahlias

Dahlia Cuttings featuring Mark Oldenkamp
Elkhart Dahlia Society Video: Digging Dahlias
Disbudding Dahlias (video)
Tying Dahlias (video)