Illustrative photos, not of Penhill Dark Monarch. Cultivar-accurate photos are coming.
Penhill Dark Monarch
A giant informal decorative bred by Walter H. Maritz in South Africa and introduced in 2003. The blooms are enormous and the color is hard to pin down: the registry calls it purple and yellow, while growers see raspberry fading to plum. Expect a dark blend that changes as each flower opens and ages. It holds the RHS Award of Garden Merit.
Specifications
- Bloom Form
- Informal Decorative
- ADS Size Class
- Giant (AA)
- Bloom Size
- 8–10"
- Color
- A shifting dark blend; sources describe it as purple and yellow, raspberry to plum, or peach and dark pink
- Height
- 48–60"
- Bloom Season
- Late season
- Hybridizer
- Walter H. Maritz
- Introduced
- 2003
- Origin
- South Africa
Growing Notes
Plants reach 48–60 inches, so set a sturdy stake at planting. Growers report unusually strong stems for a bloom this size and steady flowering into fall. Disbud for the largest blooms. The color shifts through the season — lovely in the garden, a planning challenge for event work that needs a repeatable shade.
Where to Buy
Checking stock at 16 nurseries...
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Bear Creek Farm
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Bee Merry Farm
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Birddog Flower Farm
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Club Meadow
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Dahlia Patch
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Detroit Dahlias
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Emerald Angel
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Fleur Farm
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Grace Garden Blooms
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Hedgewood Farms
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Little Bear Flower Farm
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Longfield Gardens
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Petal Creek Farm
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Tree House Blooms
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Valley Ridge Farm
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White Barn Flower Co
