RM Rainier Dahlia
Description
RM Rainier is a refined, high-impact cut flower known for its clean, luminous blooms and beautifully structured, formal form that looks polished in the garden and in arrangements. With sturdy stems and consistent flowering, it’s a dependable performer for growers who want an elegant, modern look that pairs effortlessly with both pastel and bold palettes.
Specifications
| Color | L |
|---|---|
| Bloom size | 6" |
| Plant height | 5 ft |
| Hybridizer | Merle |
| Year introduced | 2025 |
| Country of origin | USA |
How to grow RM Rainier
RM Rainier is a dahlia with 5 ft tall with 6-inch blooms. Plant tubers 12–18 inches apart in full sun after the last frost. Pinch when plants reach 12 inches tall to encourage bushier growth and more blooms.
Harvest & vase life
Dahlia-form dahlias like RM Rainier harvest dahlias when blooms are three-quarters to fully open. With clean cuts and fresh water, most varieties last 4–7 days in the vase.
Similar dahlia varieties
- RM Baby Girl — FD, DB
- RM Berry Kiss — FD, DP
- RM Hannah Joe — FD, L
- RM Moonlight — FD, L
- Rm Summer Haze — FD, BR
- RM Watermelon — FD, BI
Frequently asked questions
How tall does RM Rainier grow?
RM Rainier grows to about 5 ft.
What color is RM Rainier?
L — ADS color classification for RM Rainier.
Who hybridized RM Rainier?
Merle, introduced in 2025.
Is RM Rainier good for cut flowers?
Yes. Dahlias are among the most popular cut flowers for home and market growers. Expect 4–7-day vase life with proper hydration.