Growing guide · Vegetable garden and berries
Dahlia
Dahlia
A tuberous ornamental flowering from late summer to frost; tubers are stored indoors over winter.
Key figures
| Item | Value | Source |
|---|---|---|
| Sowing / planting | outdoors after frost, usually late May, early to mid-June in colder regions | [1] |
| Seed rate / spacing | at least 60 cm | [1] |
| Sowing depth | tubers about 7.5 cm (3 in.) deep | [2] |
| Pot size | about 50 cm wide for one plant | [1] |
| Winter | tubers dry at 2–7 °C (35–45 °F) in vermiculite or dry sand | [2] |
Houseplant or ornamental: no harvest. Block tasks are watering, feeding, repotting, pruning and pest checks per the guide.
The full guide (care, pests, beginner and professional tips) is currently in Finnish. The figures above are the same and come from the sources below.
These are general guidelines. Always check the variety, seed packet or fertiliser instructions and current regulations.