Life Span
Perennial
Perennial
Type
Grass
Perennial
Origin
Europe, Asia
Southeastern United States, North-Central United States, Central United States, South-Central United States, Southwestern United States, Texas, Canada, Mexico
Types
Blue Oat grass
Ratibida columnifera
Number of Varieties
-25
0
40000
👆🏻
Habitat
Cropland, gardens, Grassland, Roadsides
Dry areas, Prairies, Rocky areas, rocky outcrops
USDA Hardiness Zone
4-93-10
0
99
👆🏻
AHS Heat Zone
-
10-1
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 15, 16, 17, 23, 24
A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Clump-Forming
Upright/Erect
Plant Size
Minimum Height
20.50 cm30.00 cm
0
3900
👆🏻
Minimum Width
30.50 cm30.50 cm
0
6350
👆🏻
Plant Color
Flower Color
Brown
Yellow, Purple, Burgundy, Light Green, Brown
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown
Brown
Leaf Color in Spring
Gray Green
Light Green, Gray Green
Leaf Color in Summer
Light Green
Light Green, Gray Green
Leaf Color in Fall
Dark Green
Light Green, Gray Green
Leaf Color in Winter
Tan, Brown
Light Green
Shape
Leaf Shape
Grass like
Subulate
Thorns
✔
✘
✔
✘
Plant Season
-
Summer
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun
Growth Rate
Medium
Fast
Type of Soil
Loam
Loam, Sand
The pH of Soil
Acidic, Neutral
Neutral
Soil Drainage
Average
Well drained
Bloom Time
Early Summer
Late Spring, Early Summer, Summer, Late Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Drought
Where to Plant?
Ground
Ground
How to Plant?
Seedlings
Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Does not require lot of watering, Water occasionally
Average Water Needs, Water in morning to avoid prompting diseases
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral
Neutral
Soil Type
Loam
Loam, Sand
Soil Drainage Capacity
Average
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Cut or pinch the stems, Pinch Tips, Remove damaged leaves, Remove dead branches, Remove dead flowers, Remove dead leaves, Remove dead or diseased plant parts, Remove deadheads
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer, Apply N-P-K
Pests and Diseases
Red blotch
Pests and diseases free, Red blotch
Plant Tolerance
Drought
Drought, Dry Conditions, Dry soil, Full Sun
Flowers
-
Showy
Flower Petal Number
Single
Single
Fruits
Showy Fruit
✔
✘
✔
✘
Edible Fruit
✔
✘
✔
✘
Fragrance
Fragrant Flower
✔
✘
✔
✘
Fragrant Fruit
✔
✘
✔
✘
Fragrant Leaf
✔
✘
✔
✘
Fragrant Bark/Stem
✔
✘
✔
✘
Showy Foliage
✔
✘
✔
✘
Showy Bark
✔
✘
✔
✘
Foliage Texture
-
Fine
Foliage Sheen
Matte
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
-
Birds, Butterflies
Allergy
Asthma, Itchy eyes
Rhinitis
Uses
Aesthetic Uses
-
Borders
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
Arthritis, Headache, Stomach pain
Analgesic
Part of Plant Used
Whole plant
Flowers
Other Uses
Used as a nutritious food item
Can be made into a herbal tea, Used in making tea
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Bedding Plant, Feature Plant, Groundcover
Container, Cutflower, Mixed Border, Wildflower
Botanical Name
ARRHENATHERUM
RATIBIDA columnifera
Common Name
Oatgrass
Mexican Hat
In Hindi
जई घास
Mexican Hat
In German
Ährengras
Mexican Hat
In French
Folle avoine
Mexican Hat
In Spanish
oat Grass
mexican Hat
In Greek
βρώμη Grass
Mexican Hat
In Portuguese
aveia-
Mexican Hat
In Polish
Owies trawa
Mexican Hat
In Latin
oat Grass
Mexicanus Hat
Kingdom
Plantae
Plantae
Phylum
-
Tracheophyta
Class
Liliopsida
Magnoliopsida
Order
Poales
Asterales
Family
Poaceae
Asteraceae
Genus
Danthonia
Ratibida
Clade
Angiosperms, Commelinids, Monocots
Angiosperms, Asterids, Eudicots
Tribe
Aveneae
-
Subfamily
Danthonioideae
-
Number of Species
45014
1
27800
👆🏻