Life Span
Perennial
Perennial
Type
Herbaceous Perennial
Grass
Origin
North America, United States, Northeastern United States, Mid-Atlantic United States, Southeastern United States, Central United States, South-Central United States, Canada, Eastern Asia, India, Nepal, China, Japan, Korea
Eastern Africa, Southern Africa
Types
-
Robusta blue, Robusta green, Curvula
Number of Varieties
120
0
40000
👆🏻
Habitat
Cliffs, Moist woods, Riverbanks
Cultivated Beds
USDA Hardiness Zone
5-97-13
0
99
👆🏻
AHS Heat Zone
9-5
12 - 10
Sunset Zone
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Upright/Erect
Clump-Forming
Where to Plant?
Ground
Ground
How to Plant?
From Rhizomes, Seedlings
Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Keep ground moist
Average Water Needs
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral
Acidic, Neutral, Alkaline
Soil Type
Clay, Loam, Sand
Loam, Sand
Soil Drainage Capacity
Average
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun
Pruning
In late autumn, Remove damaged leaves, Remove dead leaves
Cut back old stems to the ground
Fertilizers
All-Purpose Liquid Fertilizer
Requires high amount of nitrogen
Pests and Diseases
Red blotch
-
Plant Tolerance
Drought
Drought
Uses
Aesthetic Uses
-
Borders, Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Erosion control
Plant Benefits
Medicinal Uses
-
-
Part of Plant Used
-
Leaves, Seeds
Other Uses
Decorative veneers, flooring, paneling, Showy Purposes
Used as a grain, Used to make baskets, brooms, hats
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Wildflower
Bedding Plant, Container, Edging, Groundcover, Mixed Border, Rock Garden / Wall