Life Span
Biennial
Perennial
Type
Tree
Perennial
Origin
Central United States, Canada
-
Types
Two-petal ash, Single-leaf ash, Fragrant ash
Kniphofia uvaria
Number of Varieties
6570
0
40000
👆🏻
Habitat
Dry areas, Hills, limestone outcrops, Moist woods
Damp Places, Marshy ground
USDA Hardiness Zone
4-86-9
0
99
👆🏻
AHS Heat Zone
8-4
9-4
Sunset Zone
2a, 2b, 3a, 3b, 4, 5, 6
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Upright/Erect
Clump-Forming
Plant Size
Minimum Height
2,500.00 cm45.70 cm
0
3900
👆🏻
Minimum Width
100.00 cm50.80 cm
0
6350
👆🏻
Plant Color
Flower Color
Green, Purple
Yellow, Red, Orange, Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Green, Tan
-
Leaf Color in Spring
Green
Green, Blue Green
Leaf Color in Summer
Green
Green, Blue Green
Leaf Color in Fall
Yellow, Light Yellow
Blue Green, Gray Green, Light Yellow
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Pinnate
Linear
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Summer
Growing Conditions
Sunlight
Full Sun
Full Sun, Partial Sun
Growth Rate
Fast
Medium
Type of Soil
Clay, Loam
Clay, Loam, Sand
The pH of Soil
Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Spring
Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Drought
Where to Plant?
Ground
Container, Ground
How to Plant?
Seedlings, Transplanting
Divison, Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs
Needs more water during establishment, Water Deeply, Water in morning to avoid prompting diseases, Water in the early morning hours
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral, Alkaline
Acidic, Neutral
Soil Type
Clay, Loam
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun
Full Sun, Partial Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Cut or pinch the stems, Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer, Apply N-P-K
Pests and Diseases
Red blotch
Onion thrips, Red blotch, Root rot
Plant Tolerance
-
Drought, Moisture
Flowers
✔
✘
✔
✘
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
Medium
Coarse
Foliage Sheen
Matte
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds
Snails
Allergy
-
-
Uses
Aesthetic Uses
-
Borders, Cottage Garden, Ground Cover
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Shadow Tree
Air purification
Plant Benefits
Medicinal Uses
-
-
Part of Plant Used
Inner Bark, Seeds
-
Other Uses
Used as a dye, Used for woodware, Wood is used in construction
-
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Shade Trees, Street Trees
Container, Cutflower, Mixed Border, Rock Garden, Wall
Botanical Name
FRAXINUS quadrangulata
KNIPHOFIA 'Border Ballet'
Common Name
Blue Ash
Tritoma, Wisley Blue Spring Starflower, Wisley Blue Springstar
In Hindi
Blue Ash plant
Tritoma
In German
Blue Ash Pflanze
Tritoma
In French
usine Blue Ash
Tritoma
In Spanish
planta de Blue Ash
tritoma
In Greek
φυτό Blue Ash
tritoma
In Portuguese
planta Blue Ash
Tritoma
In Polish
Blue Ash roślin
Tritoma
In Latin
Blue Ash herba
Trytoma
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Magnoliopsida
Order
Scrophulariales
Asparagales
Family
Oleaceae
Liliaceae
Genus
Fraxinus
Kniphofia
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Monocots
Tribe
Oleeae
-
Subfamily
-
-
Number of Species
6572
1
27800
👆🏻