Life Span
Perennial
Perennial
Type
Tree
Perennial
Origin
North America
Southeastern United States, North-Central United States, Central United States, South-Central United States, Southwestern United States, Texas, Canada, Mexico
Types
Bergmann's Elm, Chestnut-leafed Elm, Hangzhou Elm
Ratibida columnifera
Number of Varieties
17525
0
40000
👆🏻
Habitat
Woodland Garden Canopy
Dry areas, Prairies, Rocky areas, rocky outcrops
USDA Hardiness Zone
3-93-10
0
99
👆🏻
AHS Heat Zone
9-1
10-1
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21
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
Upright/Erect
Upright/Erect
Plant Size
Minimum Height
3,900.00 cm30.00 cm
0
3900
👆🏻
Minimum Width
3,700.00 cm30.50 cm
0
6350
👆🏻
Plant Color
Flower Color
Green
Yellow, Purple, Burgundy, Light Green, Brown
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Tan
Brown
Leaf Color in Spring
Light Green
Light Green, Gray Green
Leaf Color in Summer
Dark Green
Light Green, Gray Green
Leaf Color in Fall
Light Yellow
Light Green, Gray Green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Ovate
Subulate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Summer
Growing Conditions
Sunlight
Full Sun
Full Sun
Growth Rate
Fast
Fast
Type of Soil
Loam
Loam, Sand
The pH of Soil
Acidic, Neutral
Neutral
Soil Drainage
Average
Well drained
Bloom Time
Early Spring
Late Spring, Early Summer, Summer, Late Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Pollution
Drought
Where to Plant?
Ground
Ground
How to Plant?
Budding, Grafting, Seedlings, Semi-hardwood cuttings, Softwood cuttings
Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs, Do Not over Water, Requires regular watering
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
Full Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts, Remove deadheads
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
Complete balanced fertilizer, fertilize in spring
All-Purpose Liquid Fertilizer, Apply N-P-K
Pests and Diseases
Red blotch
Pests and diseases free, Red blotch
Plant Tolerance
Pollution
Drought, Dry Conditions, Dry soil, Full Sun
Flowers
✔
✘
✔
✘
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
Medium
Fine
Foliage Sheen
Matte
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds, Butterflies
Birds, Butterflies
Allergy
Pollen
Rhinitis
Uses
Aesthetic Uses
-
Borders
Beauty Benefits
Good for skin and hair
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Nesting sites for birds, Shadow Tree
Air purification
Plant Benefits
Medicinal Uses
Antispasmodic, Astringent, Birthing aid, Haemostatic, Salve
Analgesic
Part of Plant Used
Bark, Fibre, Leaves
Flowers
Other Uses
Container, String, Used for woodware, Used in paper industry
Can be made into a herbal tea, Used in making tea
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Shade Trees, Street Trees
Container, Cutflower, Mixed Border, Wildflower
Botanical Name
ULMUS americana 'Augustine'
RATIBIDA columnifera
Common Name
American Elm, Augustine Elm
Mexican Hat
In Hindi
American Elm Tree
Mexican Hat
In German
Amerikanische Ulme
Mexican Hat
In French
Américaine Elm Tree
Mexican Hat
In Spanish
Olmo Americano Árbol
mexican Hat
In Greek
American Elm Tree
Mexican Hat
In Portuguese
Árvore de olmo americano
Mexican Hat
In Polish
Amerykańska Elm Tree
Mexican Hat
In Latin
Latin ulmo
Mexicanus Hat
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Magnoliopsida
Order
Urticales
Asterales
Family
Ulmaceae
Asteraceae
Genus
Ulmus
Ratibida
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Tribe
-
-
Subfamily
-
-
Number of Species
614
1
27800
👆🏻