Photo by Intrinsic Perennial Gardens
Used with permission, all rights reserved
Silphium perfoliatum 'The Holy Grail'
Also Known As
- The Holy Grail Golden Cup Plant
Plant type
perennial
size
- H: 6'
- W: 3'
planting zones
- 4a-9b
Silphium perfoliatum 'The Holy Grail' plant details
Silphium perfoliatum 'The Holy Grail' is a broadleaf deciduous perennial with chartreuse foliage. In summer yellow flowers emerge. Attracts bees and birds making it an excellent addition to pollinator gardens. Grows well with sun and regular water. Adapts to various soil conditions. Does well in rich and well-drained soil.
CHARACTERISTICS OF Silphium perfoliatum 'The Holy Grail'
- Plant type: perennial
- Plant family: lamiaceae
- Foliage: deciduous chartreuse
- Mature size: 3 FT wide, 0 FT - 6 FT - tall
- Flowers: yellow blooms in summer
- Uses: border plant, floriferous
GROWING CONDITIONS for Silphium perfoliatum 'The Holy Grail'
- USDA Zones: 4a - 9b
- Sun exposure: sun
- Watering frequency: regular
- Soil needs: rich and well-drained
Nursery contributed plant descriptions
Garden photo gallery of Silphium perfoliatum 'The Holy Grail'
Gardening facts about Silphium perfoliatum 'The Holy Grail' plant
How to Grow Silphium perfoliatum 'The Holy Grail'
Sun Exposure
- sun
Water Needs
- regular
Soil Needs
- adaptable
- well-drained
- rich
Features
Foliage Color
- chartreuse
Flower Color
- yellow
Wildlife
- birds
- bees
Flower Season
- summer
Foliage Season
- deciduous
Landscape groups by tags
See other plant types of Silphium for your garden
aka Compass Plant
Plant Type
Perennial
Zones
4a-9b
Size
Height: 5'-10'
Width: 2'-4'
- sun
- even moisture - regular
aka Cup Plant
Plant Type
Perennial
Zones
5a-10a
Size
Height: 4'-10'
Width: 2'-4'
- sun - mostly shade
- even moisture - regular
aka Prairie Dock
Plant Type
Perennial
Zones
4a-10b
Size
Height: 7'-10'
Width: 3'-6'
- sun
- even moisture - drought tolerant
aka Whole-Leaf Rosinweed
Plant Type
Perennial
Zones
4a-8b
Size
Height: 2'-5'
Width: 24"-36"
- sun
- even moisture - regular
aka Complaya trilobata, Silphium trilobatum, Thelechitonia trilobata, Wedelia paludosa, Wedelia trilobata, Creeping Daisy, Rabbit's Paw, Singapore Daisy, Water Zinnia, Wedelia, Yellow Creeping Ox-Eye Daisy, Yellow Dots
Plant Type
Perennial, Groundcover
Zones
8a-11
Size
Height: 6"-12"
Width: 18"-48"
- sun - mostly shade
- regular
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