Q&A: Can you split Dahlia tubers when they’ve grown too big? What are the best long-flowering spring plants? How do you put together colour collections?
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Sarah Raven
4.7 • 843 Ratings
🗓️ 20 February 2024
⏱️ 12 minutes
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| 0:00.0 | So on to another Dania question, Josie. Can you split tubers when they've grown massive? |
| 0:11.1 | And if so, how? This is from Cathy Gleasdell. Yes, you can certainly split your tubers. And if you're a cutflower |
| 0:18.1 | grower, you probably grow from new tubers every year. |
| 0:22.1 | But if you're a home grower and you've got your tubers in the ground and it's got really huge, |
| 0:27.9 | then I would tend to leave it till spring. |
| 0:30.8 | So dig the whole huge clump up. |
| 0:33.7 | We dug some up, didn't we, a few years ago, and they filled a wheelbarrow. |
| 0:37.1 | The one clump filled a wheelbarrow. |
| 0:38.9 | They were huge. |
| 0:40.0 | Absolutely amazing. |
| 0:41.0 | Yeah. |
| 0:41.9 | So dig them out of the ground and you'll see stems coming off different sections with tubers on them. |
| 0:49.1 | So you just tease those apart. |
| 0:51.7 | So long as you've got an eye on the tuber, |
| 0:55.0 | which is a bump at the top of the tuber, |
| 0:59.5 | then that'll grow into a stem and you'll get a new plant. |
| 1:03.4 | So a huge clump could be divided into 20 plants possibly. |
| 1:08.0 | And you can also, |
| 1:09.2 | you can do it in autumn. |
| 1:10.8 | A lot of the growers split their |
| 1:13.2 | tubers in, you know, the clumps in autumn. So, but then you've obviously got to store them |
| 1:19.4 | over winter. And if they're cut or teased apart, you might damage them in that process. So if you're digging them up any way to store, I would then split them in spring |
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