How Far Apart to Plant Dahlias?
Space Dahlias 18 inches apart within the row, and keep 24 inches between rows. Stake at planting so you do not spear the tuber later.
| Plant spacing | 18 in (46 cm) apart |
| Row spacing | 24 in (61 cm) apart |
| Planting depth | Plant tubers 4 to 6 inches deep |
| Sunlight | Full sun |
| When to plant | After last frost |
| Good companions | asters, salvia |
| Avoid near | none major |
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Spacing tips for Dahlias
Bushy dahlias need 18 inches for airflow and room to stake the heavy blooms.
Companion planting
Plant near: asters, salvia.
Keep away from: none major.
Frequently asked questions
- How far apart should I plant Dahlias?
- Space Dahlias about 18 inches apart within the row, with 24 inches between rows. Stake at planting so you do not spear the tuber later.
- How deep do I plant Dahlias?
- Plant Dahlias at a depth of Plant tubers 4 to 6 inches deep.
- What grows well with Dahlias?
- Good companions for Dahlias include asters, salvia. Avoid planting near none major.