RM Karoline Dahlia
Description
RM Karoline is a refined, garden-worthy dahlia prized for its elegant, symmetrical blooms and beautifully layered petals that create a full, polished look in the bed or vase. Its fresh, romantic coloring reads softly from a distance yet shows pleasing depth up close, making it an easy choice for mixed borders and cut-flower arrangements. Productive and dependable through the season, RM Karoline brings a graceful, classic presence to any planting.
Specifications
| Color | PK |
|---|---|
| Bloom size | 3.5" |
| Plant height | 5.5 ft |
| Hybridizer | Merle |
| Year introduced | 2025 |
| Country of origin | USA |
How to grow RM Karoline
RM Karoline is a dahlia with 5.5 ft tall with 3.5-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 Karoline 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 Karoline grow?
RM Karoline grows to about 5.5 ft.
What color is RM Karoline?
PK — ADS color classification for RM Karoline.
Who hybridized RM Karoline?
Merle, introduced in 2025.
Is RM Karoline 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.