Unpacking Your Dahlia Tubers: What to expect, what's normal and what's not

So, you’ve waited a long time for your dahlia tubers and they're finally here! Whether you’re a seasoned grower or giving dahlias a go for the first time, that moment when your tubers arrive can bring a mix of excitement... and a little uncertainty. They’re not the prettiest things straight out of the box, and it’s easy to wonder, “Is this right? Is this going to grow?” The short answer? Yes!

Dahlia tubers can look a little odd, and they often arrive with a few quirks that are perfectly normal. Let’s walk through what you can expect when you unpack your tubers, what’s completely fine (even if it doesn’t look it), and when you should actually be concerned.

First Things First: Dahlia Tubers Come in All Shapes and Sizes

When you open up your box, don’t be surprised to see a mixed bunch. Some tubers will be long and thin, others short and round. Some might look a little shrivelled, and others could be plump and smooth. Think of them like people—no two are exactly alike!

The brilliant thing about ordering from us, is that every single tuber has been quality checked before being labelled and packed. So you'll have an immediate visual reminder about what you've ordered and the blooms and colours that are destined for your garden later this year!

If you’re new to dahlias, you might be tempted to compare two different tuber varieties and wonder why one looks so much bigger or "healthier" than the other. But bigger doesn’t automatically mean better. In fact, some of the scrawniest-looking tubers can produce the most impressive plants and flowers. It’s all down to the variety, not the size of the tuber.

Dahlia Tuber Anatomy (And Why It Matters)

Understanding the basic parts of a dahlia tuber can really help you figure out what’s what when you’re unpacking and planting. Here’s a quick breakdown:

• Tuber Body: This is the food storage, full of starch. It sends out roots but not shoots. Most dahlia plants have a cluster of tuber bodies around their crown, and losing one or two doesn’t affect their ability to grow.

• Neck: The neck connects the crown to the tuber body. This is often where tubers snap off during harvesting or shipping. If the neck breaks and the tuber doesn’t have a crown attached, it won’t grow—but that’s okay, the crown’s still good!

• Crown (aka the Head): This is the business end of the plant, where you’ll find the “eyes.” These little bumps are the buds that sprout into your leafy stems and flowers. No eyes = no plant.

• Eyes: The eyes are the key to everything. They are where the new shoots emerge, and you’ll only find them on the crown—never randomly on the body of the tuber (unlike potatoes). When you’re looking for them, think of little bumps or warts. Once they start swelling, they’re easier to spot.

  If your tuber has sprouted already and one of those shoots gets knocked off, don’t worry. The eye can send out another. Dahlias are resilient like that.

Loose Tubers? Broken Necks? Don't Panic!

It’s very common to find a few tubers that have broken off in transit. You might spot loose tubers that have separated from the main plant or see necks that have snapped clean through. In most cases the necks on these tubers were broken when the tubers were harvested from the ground and that they will have come away from the crown in transit.

Each dahlia plant grows from the crown, which is the top part of the tuber where you’ll find its “eyes.” These little buds are what sprout into stems and leaves. The tuber bodies themselves are just storage tanks full of starch. They don’t have any eyes (or DNA) to grow on their own.

So, when a tuber breaks off at the neck, and there’s no crown or eye attached, it wasn’t going to grow anyway. It’s like a battery without a device—useful to the plant when attached, but not much use by itself. As long as you’ve got an eye on the crown, with even a tiny bit of tuber still attached, you’re all good.

It won’t affect your plant’s health or performance. And by the end of the growing season, your dahlia will have grown plenty of new tubers to replace any that were lost. If you find a loose tuber with an eye and a scrap of crown attached? Lucky you! That’s a free plant - its a positive, not a negative!

What If My Tubers Look Wrinkled?

Some tubers arrive looking a little shrivelled or wrinkled, and that’s okay. Dahlias are dug up after the growing season in October and stored through winter, so they often lose a bit of moisture along the way. As long as they feel firm when you squeeze them, they’re alive and well. Plant them as usual, and they’ll plump right up once they start growing.

What If My Tubers Are Soft?

Soft, mushy tubers are another story. If they feel squishy or spongy, that’s usually a sign of rot, disease, or that they’re too old to grow well. Sadly, they’re unlikely to do anything productive in your garden. If you received soft tubers from us, please get in touch—we’ll be happy to send replacements.

In a Nutshell: Dahlias Are Tougher Than They Look

Unpacking your dahlias can feel a little daunting, especially if you’re new to it. But rest assured, they’re hardy, forgiving plants. They might look rough around the edges when they arrive, but they’re ready to thrive once they get into the soil.

Here’s a quick recap:

• Tubers come in all shapes and sizes—don’t judge by looks alone.

• Loose or broken tubers without eyes are no loss.

• Wrinkled tubers? Totally normal. Soft tubers? Not so good—get in touch for replacements.

• The eyes on the crown are what matter most. Find those, and you’re set.

If you've ordered your dahlia tubers with us this year, you'll have complimentary access to our Introduction to Growing Dahlias online course (worth £49.99) , which is packed with easy, step-by-step video guides to support you from planting to blooming.

Now all that’s left to do is get them planted and wait for the magic to happen!