Life Span
Annual or Biennial
Perennial
Type
Vegetable
Tree
Origin
Europe
Northeastern United States, Mid-Atlantic United States, Central United States, Canada
Types
Brassica rapa subsp. pekinensis
Brassica rapa subsp. chinensis
Brassica rapa var. rapifera
Brassica rapa subsp. nipposinica
Brassica rapa subsp. perviridis
Blue ash, Single-leaf ash, Fragrant ash
Number of Varieties
545
0
40000
👆🏻
Habitat
-
Moist Soils
USDA Hardiness Zone
6-93-7
0
99
👆🏻
AHS Heat Zone
9-3
7-1
Sunset Zone
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
30.00 cm1,220.00 cm
0
3900
👆🏻
Minimum Width
30.00 cm610.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Yellow
Green, Purple
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Green, Tan
Leaf Color in Spring
Green, Light Green
Green, Dark Green
Leaf Color in Summer
-
Dark Green
Leaf Color in Fall
-
Yellow, Yellow green, Brown, Bronze
Leaf Color in Winter
-
-
Shape
Leaf Shape
Obovate
Pinnate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Fall, Winter
Spring, Summer
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun
Growth Rate
Fast
Fast
Type of Soil
Loam, Sand
Clay, Loam, Sand
The pH of Soil
Neutral
Acidic, Neutral
Soil Drainage
Well drained
Average
Bloom Time
Spring, Late Spring, Early Summer, Summer, Late Winter
Early Spring, Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Wet Site
Where to Plant?
Ground
Ground
How to Plant?
Seedlings
Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Do Not over Water, Water in morning to avoid prompting diseases
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
Acidic, Neutral
Soil Type
Loam, Sand
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Average
Sun Exposure
Full Sun, Partial Sun
Full Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Prune in fall, Prune in winter, Prune when plant is dormant, Remove branches, Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts, Remove short twigs
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer
Pests and Diseases
Red blotch
Red blotch
Plant Tolerance
Drought
Wet Site
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
Coarse
Medium
Foliage Sheen
-
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Aphids, Flea beetles, white worms
Birds
Allergy
-
-
Uses
Aesthetic Uses
-
Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification, Nesting sites for birds, Wildlife, Windbreak
Plant Benefits
Medicinal Uses
Antirheumatic, Resolvent
Antirheumatic, Diaphoretic, Diuretic, Fever, Gout, Laxative, Ophthalmic, Purgative, Sore Eyes, Sore throat, Tonic
Part of Plant Used
Leaves, Stem
Inner Bark, Leaves, Tree trunks
Other Uses
For making oil
Basketary, Used as a dye, Used as fuel, Used for woodware
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Edible, Herb / Vegetable
Shade Trees, Water Gardens
Botanical Name
BRASSICA rapa
FRAXINUS nigra
Common Name
Bok Choy, Broccoli Raab, Chinese Cabbage, Choy Sum, Field Mustard, Pak Choi, Tatsoi, Turnip
Black Ash, Brown Ash, Swamp Ash
In Hindi
Bok Choy
Black Ash plant
In German
Bok Choy
Black Ash Pflanze
In French
Bok Choy
plante Black Ash
In Spanish
Bok Choy
planta de negro de Ceniza
In Greek
Bok Choy
φυτό μαύρη τέφρα
In Portuguese
Bok Choy
planta Black Ash
In Polish
Bok Choy
Black Ash roślin
In Latin
Bok Choy
Black ash herba
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Brassicales
Scrophulariales
Family
Brassicaceae
Oleaceae
Genus
Brassica
Fraxinus
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Tribe
-
Oleeae
Subfamily
-
-
Number of Species
118
1
27800
👆🏻