How to overwinter dahlia tubers
Sarah discusses the best options for overwintering dahlias – lifting or mulching.
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Cardinal Dahlia Collection
Velvet purples and crimsons, with the single 'Blue Bayou' a perfect contrast to the rest. More
| 4 tubers 229249-4 | £14.95 |
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| 8 tubers 229249-8 | £28.95 |
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More Details
Velvet purples and crimsons, with the single 'Blue Bayou' a perfect contrast to the rest.
This collection includes:
Our dahlias:
- are first class, healthy tubers – the largest and best you can buy.
- come with full planting, spacing and cultivating instructions for beginner gardeners
- tubers should be potted up when they arrive and be kept in a light, frost-free place until the frosts are over and then be planted into the garden.
| Genus | Dahlia |
| Type | Tender Perennial Tuber |
| Border Position | Back, Middle |
| Soil Type | Acid, Chalky, Fertile, Neutral |
| Scent | Unscented |
| Site | Full Sun |
| Moisture | Moist but Well-drained |
| Spacing | Plant 30cm (12in) deep, 75cm (30in) apart. |
| Care Tips | Support with a stout stick, tie in every couple of weeks. In the south you can mulch deeply and overwinter them in the ground. |
| Flowering | July - November |
| Vase Life | Only pick dahlias in full flower. Recut the hollow stem ends under water to avoid airlocks. |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
- Sow Under Cover/Plant Indoors
- Direct Sow/Plant Outdoors
- Flowers/Harvest
Advice & Videos
How to plant and grow dahlia tubers
Find out how to grow strong, healthy dahlias this spring – how to plant, look after and overwinter them, and what to do with your bulbs when they...
How to take dahlia cuttings
Watch and learn how to take dahlia cuttings – turn 1 tuber into 10.
Delivery
Bulb Delivery - When in stock, outdoor bulbs are normally despatched within 2-3 working days. During the busy months of February and September/October, it can take up to two weeks for delivery, due to the number of orders being processed. Please note, we despatch all of our orders in the order they were placed.
Click here to find out more information about our delivery rates and times.
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