Dahlia Cuttings Course:
From Tuber to Bloom
A free, 6-week course to help you multiply your dahlias, no experience necessary.
Turn One Tuber into Dozens of Blooms. Learn how to propagate dahlias using simple, step-by-step methods taught by a flower farmer in the Hudson Valley.
What You’ll Learn
Choose and prep healthy dahlia tubers
Create the ideal indoor grow setup
Take strong, healthy cuttings
Root them successfully, no greenhouse required
Transplant and care for them until they bloom
How the Course Works
6 Weekly Emails with Short Videos
Easy-to-Follow Lessons for Beginners & Hobby Growers
Downloadable Guides and Worksheets
Bonus Q&A Opportunities on Instagram
Rooting Your Cuttings
How to prepare cutting trays or soil blocks
Water vs. soil vs. perlite methods of rooting
Humidity domes and misting schedules
Rooting hormones: yes or no?
Bonus: Rooting Methods Comparison Chart
Care, Pinching, and Planning for Blooms
How to pinch for bushy growth
Watering, fertilizing, and staking cuttings
Protecting young plants from pests
Planning your garden layout with propagated plants
Bonus: Pinching & Care Guide + Bloom Planner
Choosing Tubers & Potting Them Up
What are dahlia cuttings vs. growing from tubers?
Anatomy of a dahlia tuber (eye, neck, crown, storage root)
How to select healthy tubers for cuttings
Potting up tubers indoors to “wake them up”
Bonus: Tuber Selection & Anatomy Cheat Sheet
Creating the Perfect Growing Environment
Light, temperature, and humidity needs for sprouting
Best potting mix for sprouting vs. rooting
Using heat mats and grow lights effectively
How to prevent rot and mold
Bonus: Indoor Grow Setup Checklist
Taking Cuttings (Timing + Technique)
When is a tuber ready to take cuttings?
Tools and sterilization tips
How to take a clean, healthy cutting
Multiple shoots from one tuber: how often you can cut
Bonus: Step-by-Step Cuttings Guide
Transplanting & Hardening Off
How to tell when a cutting is ready for transplant
Potting up into 4-inch pots or directly into the garden
Hardening off: What it means and how to do it
Troubleshooting weak or leggy plants
Bonus: Transplant Timing Tracker
Enroll For Free Today
Enroll For Free Today
Meet your Instructor
I’m Chantal, founder of Lagrange Rouge, a small flower farm in the Hudson Valley. I love growing things slowly, beautifully, and sustainably. This course was born from my obsession with dahlias, and how addicting it is to multiply them from just one tuber.
Frequently asked questions
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What is a dahlia cutting and why should I grow them this way?
A dahlia cutting is a shoot taken from a tuber that can be rooted to grow a brand-new plant. This propagation method lets you multiply your dahlias quickly and grow more blooms from a single tuber, perfect for gardeners who want a big impact without buying dozens of plants.
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This course is designed for beginner and intermediate gardeners, home growers, and flower lovers who want to learn how to propagate dahlias from cuttings. No greenhouse or fancy equipment needed, just a little curiosity and some natural light.
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Each week, you'll get a new video tutorial delivered to your inbox, covering topics like:
Choosing healthy dahlia tubers
How to pot them up indoors
Creating the ideal environment for growth
Taking and rooting cuttings
Transplanting and caring for your young plants
Tips to grow strong, bloom-ready dahlias
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Absolutely. You can submit questions via Instagram (@lagrangerougefarm) or reply to our weekly emails. We’ll do our best to answer them during the course or in bonus content.
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Yes! The entire 6-week course is 100% free. It’s part of Lagrange Rouge’s mission to help more people grow beauty and abundance, right from home. All we ask is that you sign up with your email so we can send the weekly lessons directly to you.
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The first video drops Friday April 18. As long as you’re signed up, you’ll receive a welcome email with everything you need to get started.
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You’ll need:
A few healthy dahlia tubers
Small pots or trays
Potting mix
A warm, sunny spot or grow light
Scissors or pruners
Water and labels
We’ll share a full supply list in your first email.
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Nope! This course is made for home growers working from a sunny windowsill, a basement grow shelf, or a small shed setup. We’ll teach you how to make the most of what you have.