Life Span
Annual and Perennial
Biennial
Type
Tender Perennial
Tree
Origin
Southern Europe, Mediterranean
Central United States, Canada
Types
Erysimum franciscanum
Two-petal ash, Single-leaf ash, Fragrant ash
Number of Varieties
5065
0
40000
👆🏻
Habitat
gardens, Grassland, Prairies
Dry areas, Hills, limestone outcrops, Moist woods
USDA Hardiness Zone
7-94-8
0
99
👆🏻
AHS Heat Zone
9-7
8-4
Sunset Zone
4, 5, 6, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
2a, 2b, 3a, 3b, 4, 5, 6
Habit
Mat-forming
Upright/Erect
Plant Size
Minimum Height
30.50 cm2,500.00 cm
0
3900
👆🏻
Minimum Width
30.50 cm100.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Pale White, Pale Yellow, Yellow, Yellow green
Green, Purple
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Green
Green, Tan
Leaf Color in Spring
Gray Green
Green
Leaf Color in Summer
Gray Green
Green
Leaf Color in Fall
Gray Green
Yellow, Light Yellow
Leaf Color in Winter
Light Green
-
Shape
Leaf Shape
Linear
Pinnate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun
Growth Rate
Fast
Fast
Type of Soil
Loam, Sand
Clay, Loam
The pH of Soil
Neutral, Alkaline
Neutral, Alkaline
Soil Drainage
Well drained
Well drained
Bloom Time
Spring, Late Spring, Early Summer, Summer, Late Summer, Early Fall
Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
-
Where to Plant?
Ground
Ground
How to Plant?
Seedlings, Stem Cutting
Seedlings, Transplanting
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Allow soil to be completely dry in between waterings, Water Deeply, Water less during winter
Average Water Needs
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral, Alkaline
Neutral, Alkaline
Soil Type
Loam, Sand
Clay, Loam
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun
Pruning
Cut or pinch the stems, Do not prune during shooting season, Prune if you want to improve plant shape, Prune prior to new growth, Remove deadheads
Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
No fertilizers needed
All-Purpose Liquid Fertilizer
Pests and Diseases
fungus, Insects, Red blotch
Red blotch
Plant Tolerance
Drought
-
Flowers
Showy
Insignificant
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
Fine
Medium
Foliage Sheen
Matte
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Bees, Birds, Butterflies
Birds
Allergy
Skin irritation
-
Uses
Aesthetic Uses
Beautification, Showy Purposes
-
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification, Shadow Tree
Plant Benefits
Medicinal Uses
-
-
Part of Plant Used
Whole plant
Inner Bark, Seeds
Other Uses
Showy Purposes
Used as a dye, Used for woodware, Wood is used in construction
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Alpine, Container, Edging, Foundation, Groundcover, Mixed Border, Rock Garden / Wall
Shade Trees, Street Trees
Botanical Name
Erysimum franciscanum
FRAXINUS quadrangulata
Common Name
Franciscan wallflower, San Francisco wallflower
Blue Ash
In Hindi
Franciscan wallflower
Blue Ash plant
In German
Franziskaner Mauerblümchen
Blue Ash Pflanze
In French
wallflower franciscaine
usine Blue Ash
In Spanish
alhelí franciscana
planta de Blue Ash
In Greek
Φραγκισκανών wallflower
φυτό Blue Ash
In Portuguese
wallflower Franciscan
planta Blue Ash
In Polish
wallflower Franciszkanów
Blue Ash roślin
In Latin
Francisci Wallflower
Blue Ash herba
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Brassicales
Scrophulariales
Family
Brassicaceae
Oleaceae
Genus
Erysimum
Fraxinus
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Tribe
-
Oleeae
Subfamily
-
-
Number of Species
5065
1
27800
👆🏻