"Potted… and Waiting: When Will My Dahlias Wake Up?"
- Andie From Dahlia Beach
- 20 hours ago
- 2 min read
Updated: 5 hours ago

So, you’ve got your dahlias potted up nice and early, compost on your jumper, hands full of promise — and now you’re peering at the pots every morning wondering: "When am I going to see something happen?" 😅
First things first — you're not alone. Waiting for signs of life from a tuber feels a bit like watching a kettle boil... only slightly more personal. Here's what you can expect when it comes to early growth and why there's no need to panic if things are taking their sweet time.
🌸 The Short Answer: Expect Growth Within 4 Weeks
If you’ve potted up your dahlias in late February to early March and they're tucked up somewhere warm (think greenhouse, windowsill, or under a heat mat), you’ll usually see the first shoots emerge within 4 weeks.
But! That timeline can vary depending on a few key things…

🕰️ What Affects How Quickly Dahlias Start Growing?
1. Temperature
Dahlias love warmth. They’ll sit quietly in the compost until the temperature is just right — ideally around 18–21°C (65–70°F). If it's a bit cooler where they're living, they’ll take their time.
2. Moisture
You want to keep the compost just barely moist — not soggy, not dry. Too much water can cause rot before the shoots even have a chance to emerge. If in doubt, water less and wait it out.
3. Light
At this stage, light isn’t the most crucial factor (they're underground!), but once they do break the surface, having a bright spot will help prevent leggy growth.

👀 What Should You Be Looking For?
You might spot one of two things:
Tiny pink or purple nubs peeking through the compost — early signs of shoots.
Roots pushing out the bottom of the pot before any top growth appears (especially with strong tubers).
Either way, it's a sign that the tuber is waking up.
🧘♀️ A Note on Patience…
Some tubers will shoot up in two weeks. Others might take five. It doesn’t necessarily mean anything’s wrong — just that each one’s on its own little journey. If you’re ever unsure, a gentle feel of the tuber can reassure you: if it’s firm and healthy-looking, it’s just not ready yet.
🌞 And Once They Start…
Once your dahlias start growing, it can happen quickly! Be ready to:
Move them into more light
Start pinching out tips once they’ve got 3–4 sets of leaves (to encourage bushiness)
Gradually harden them off before planting out after the last frost
So, hang tight — growth is coming. Your dahlias are just quietly gathering energy for the big show. And trust us — it’ll be worth the wait 🌸 Check out our dahlia tuber varieties on our website to fill your garden with flowers this summer.
Thank you for this, very reassuring x