Scarlet Dahlia
Dahlia coccinea
Scarlet Dahlia is a bulb for focal point, mid-border, suited to full sun to partial shade and clay or loam, flowering Mar, Apr, May.
| Type | Bulb |
|---|---|
| Mature height | 150 cm |
| Spread | 60 cm |
| Aspect | full sun to partial shade |
| Foliage | Deciduous |
| Hardiness | USDA 7a-9b, RHS H5 |
| Pollinator-friendly | Yes |
| Pet-safe | No |
Where to use it in a border
At around 150 cm, it sits best toward the back of a border, or on its own as a focal point with room around it. Give it about 60 cm of room to spread. It is hardy across USDA zones 7a to 9b and rated H5 by the RHS, so check it suits your area before planting.
It appears in our lists of full sun, clay soil, pollinator-friendly plants.
Border Builder uses Scarlet Dahlia's height, spread, soil, bloom months and companions to place it in a full border plan for your own conditions, on iPhone and iPad.
Flowering through the year
Worth knowing
- Not recorded as pet-safe; site it away from pets that graze if that matters to you.
- Its flowers are valued by bees and other pollinators.
Good companions
Plants that share its conditions and style, chosen to complement its place in the border:
- African Iristo edge in front
- Allegheny Monkeyflowerto edge in front
- Allium 'Purple Sensation'to edge in front
- American Beautyberryto flower when it does not
- American Cranberrybush 'Redwing'for height behind it
- American Elderberry 'Adams'for height behind it
Garden styles
Sources
Bloom timing and hardiness drawn from: