Life Span
Perennial
Perennial
Type
Tree
Perennial
Origin
Europe, Eastern Europe, Southern Europe, Russia/Siberia, Iran, Central Asia, Southern Asia, Western Asia, India, Nepal, China
Southeastern United States, North-Central United States, Central United States, South-Central United States, Southwestern United States, Texas, Canada, Mexico
Types
Black walnut
Ratibida columnifera
Number of Varieties
3025
0
40000
👆🏻
Habitat
Cold Regions, Hills, Hillside
Dry areas, Prairies, Rocky areas, rocky outcrops
USDA Hardiness Zone
4-83-10
0
99
👆🏻
AHS Heat Zone
7-1
10-1
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 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
Oval or Rounded
Upright/Erect
Plant Size
Minimum Height
1,220.00 cm30.00 cm
0
3900
👆🏻
Minimum Width
1,220.00 cm30.50 cm
0
6350
👆🏻
Plant Color
Flower Color
Yellow green
Yellow, Purple, Burgundy, Light Green, Brown
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Green, Brown
Brown
Leaf Color in Spring
Green, Copper
Light Green, Gray Green
Leaf Color in Summer
Dark Green
Light Green, Gray Green
Leaf Color in Fall
Dark Green, Yellow green
Light Green, Gray Green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Pinnate
Subulate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Summer
Growing Conditions
Sunlight
Full Sun
Full Sun
Growth Rate
Medium
Fast
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral
Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring, Early Summer
Late Spring, Early Summer, Summer, Late Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought, Frost
Drought
Where to Plant?
Ground
Ground
How to Plant?
Budding, Seedlings
Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Requires watering in the growing season, Water Deeply, Water when top layer of soil becomes dry
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
Clay, Loam, Sand
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun
Full Sun
Pruning
In Early Autumn, Prune to stimulate growth, 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
fertilize in spring, Nitrogen
All-Purpose Liquid Fertilizer, Apply N-P-K
Pests and Diseases
Anthracnose, Armillaria mellea, Blight, Caterpillars, Crown gall, Crown rot, fungus, Powdery mildew, Red blotch
Pests and diseases free, Red blotch
Plant Tolerance
Drought, Frost
Drought, Dry Conditions, Dry soil, Full Sun
Flowers
Insignificant
Showy
Flower Petal Number
-
Single
Fruits
Showy Fruit
✔
✘
✔
✘
Edible Fruit
✔
✘
✔
✘
Fragrance
Fragrant Flower
✔
✘
✔
✘
Fragrant Fruit
✔
✘
✔
✘
Fragrant Leaf
✔
✘
✔
✘
Fragrant Bark/Stem
✔
✘
✔
✘
Showy Foliage
✔
✘
✔
✘
Showy Bark
✔
✘
✔
✘
Foliage Texture
Coarse
Fine
Foliage Sheen
Glossy
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
-
Birds, Butterflies
Allergy
Severe allergen
Rhinitis
Uses
Aesthetic Uses
-
Borders
Beauty Benefits
Good for skin and hair
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Absorbs greenhouse gases, Absorbs huge amounts of CO2, Air purification, Amazing growth rate, Erosion control, Food for birds, Food for insects, Forms dense stands, Nesting sites for birds, Prevent Soil Erosion, Shadow Tree, Shelter for wildlife, Windbreak
Air purification
Plant Benefits
Medicinal Uses
Anemia, Asthma, Cancer, Cough, Diarrhea, Menstrual Disorders, Urinary tract problems
Analgesic
Part of Plant Used
Fruits, Seeds
Flowers
Other Uses
Economic Purpose, Used as a dye, Used as firewood, Used As Food, Used for its medicinal properties
Can be made into a herbal tea, Used in making tea
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Edible, Feature Plant, Shade Trees
Container, Cutflower, Mixed Border, Wildflower
Botanical Name
JUGLANS regia
RATIBIDA columnifera
Common Name
English Walnut
Mexican Hat
In Hindi
अंग्रेजी अखरोट
Mexican Hat
In German
Englisch Walnut
Mexican Hat
In French
Anglais Noyer
Mexican Hat
In Spanish
Inglés nuez
mexican Hat
In Greek
Αγγλικά Καρυδιά
Mexican Hat
In Portuguese
Inglês Walnut
Mexican Hat
In Polish
orzech włoski
Mexican Hat
In Latin
Nucis anglicus
Mexicanus Hat
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Tracheophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Asterales
Family
Juglandaceae
Asteraceae
Genus
Juglans
Ratibida
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Tribe
Juglandeae
-
Subfamily
Juglandoideae
-
Number of Species
2114
1
27800
👆🏻