Giant Miscanthus Miscanthus floridulus
Other Common Name(s):
- Phonetic Spelling
- miss-KANTH-us flor-ID-yoo-lus
- Description
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Pacific island silvergrass is the largest of the Miscanthus species in the (grass) family found in the lowland of Japan, Taiwan, and other Pacific Islands. The erect vertical clumping form will grow quickly to a height of 8 to 12 feet and a width of 4 feet so be sure to have room in the landscape for this large ornamental grass.
It features coarse foliage with a distinct central rachis on a feathery inflorescence which can be male or female. The seeds are dispersed by wind. In the autumn the leaves display a beautiful purplish tint gradually turning tan by winter.
Plant in full sun in loamy moist soil with a high organic content. It better tolerates wet soils than other Miscanthus species, as well as being salt and wind tolerant and resistant to browsing by deer and rabbits. Propagate this plant by seed or divide in the early spring or early fall. Prune back to the ground in early spring to rejuvinate.
Use this plant as a specimen or accent or mass plant it as a screen in a large landscape. The flowers work well fresh or dried so consider this plant in a cutting garden. Its coarse upright form looks attractive in a naturalized area, a large cottage garden, planted near a pond or other water garden. Or use it to provide sculptural interest in a fall or winter landscape.
Insects, Diseases, and Other Plant Problems: It can be weedy and difficult to remove. The edges of the leaves are sharp, so wear gloves when handling.
- See this plant in the following landscape:
- Cultivars / Varieties:
-
- 'Giganteus'
Very tall - 'Stricta'
- 'Giganteus'
- 'Giganteus', 'Stricta'
- Tags:
- Cultivars / Varieties:
-
- 'Giganteus'
Very tall - 'Stricta'
- 'Giganteus'
- 'Giganteus', 'Stricta'
- Tags:
-
-
Attributes:
- Genus:
- Miscanthus
- Species:
- floridulus
- Family:
- Poaceae
- Uses (Ethnobotany):
- The culms are used for arrow-shafts in Papua New Guinea and as support and drying racks for climbing vegetables and tobacco in the Philippines
- Life Cycle:
- Perennial
- Recommended Propagation Strategy:
- Division
- Seed
- Wildlife Value:
- Birds are attracted to the seeds
- Dimensions:
- Height: 8 ft. 0 in. - 12 ft. 0 in.
- Width: 2 ft. 0 in. - 4 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Ornamental Grasses and Sedges
- Habit/Form:
- Cascading
- Clumping
- Erect
- Mounding
- Growth Rate:
- Rapid
- Maintenance:
- Low
- Texture:
- Coarse
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Cultural Conditions:
- Light:
- Full sun (6 or more hours of direct sunlight a day)
- Soil Texture:
- Clay
- High Organic Matter
- Loam (Silt)
- Sand
- Soil Drainage:
- Good Drainage
- Moist
- Occasionally Wet
- Available Space To Plant:
- 3 feet-6 feet
- 6-feet-12 feet
- NC Region:
- Coastal
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
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Fruit:
- Fruit Type:
- Caryopsis
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Flowers:
- Flower Color:
- Cream/Tan
- Red/Burgundy
- Flower Inflorescence:
- Spike
- Flower Value To Gardener:
- Good Cut
- Good Dried
- Showy
- Flower Bloom Time:
- Fall
- Winter
- Flower Description:
- Male and female plants. Large white inflorescence in mid-summer turning buff color in fall; dominate central rachis.
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Leaves:
- Leaf Color:
- Green
- Variegated
- White
- Leaf Value To Gardener:
- Long-lasting
- Showy
- Deciduous Leaf Fall Color:
- Cream/Tan
- Purple/Lavender
- Leaf Type:
- Simple
- Leaf Arrangement:
- Alternate
- Leaf Shape:
- Lanceolate
- Leaf Margin:
- Serrate
- Hairs Present:
- No
- Leaf Width:
- 1-3 inches
- Leaf Description:
- 3 feet long, deep green with white mid vein, turning purplish hues in autumn, gradually turning tan by winter.
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Stem:
- Stem Is Aromatic:
- No
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Landscape:
- Landscape Location:
- Meadow
- Naturalized Area
- Pond
- Landscape Theme:
- Cottage Garden
- Water Garden
- Winter Garden
- Design Feature:
- Accent
- Mass Planting
- Screen/Privacy
- Specimen
- Attracts:
- Songbirds
- Resistance To Challenges:
- Deer
- Pollution
- Rabbits
- Salt
- Wet Soil
- Wind
- Problems:
- Weedy