Life Span
Perennial
Perennial
Type
Tender Perennial
Broadleaf Evergreen
Origin
Africa, Asia, Polynesia, Australia
Europe, Russia
Types
assera , caerulea , cinerascens , petasmatodes
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
72
0
40000
👆🏻
Habitat
mild coastal areas, Upland sandy savannas
Cold Regions, stream banks
USDA Hardiness Zone
-99996-11
0
99
👆🏻
AHS Heat Zone
-
-
Sunset Zone
8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
21,22
Habit
Clump-Forming
Upright/Erect
Plant Size
Minimum Height
40.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
15.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Blue, Blue Violet
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Blue, Violet
Orange Red
Leaf Color in Spring
Green, Blue Green, Dark Green
Red, Green, Copper
Leaf Color in Summer
Green, Blue Green, Dark Green
Green, Blue Green
Leaf Color in Fall
Green, Blue Green, Dark Green
Green, Blue Green
Leaf Color in Winter
Light Green
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Long Narrow
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Medium
Medium
Type of Soil
Loamy, Sandy, Well drained
Loam, Sand
The pH of Soil
Neutral, Slightly Acidic
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Early Summer, Summer, Late Summer
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Deer resistant, Drought, Heat Tolerance, Light Frost
-
Where to Plant?
Ground, Pot
Container, Ground
How to Plant?
Rhizome division, Seedlings
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Requires plenty of water during the growing season
Allow to dry out slightly between watering, Water daily during growing season
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral, Slightly Acidic
Acidic, Neutral
Soil Type
Loamy, Sandy, Well drained
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Pruning
Prune in the late winter or spring, Remove damaged leaves, Remove dead branches, Remove dead leaves
Cut or pinch the stems, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer, slow-release fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Crown rot, Fungal leaf spots
Aphids, Stem spot
Plant Tolerance
Deer resistant, Drought, Heat Tolerance, Light Frost
Shallow soil, Sun
Flowers
Showy
Showy
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
Foliage Sheen
-
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds, Butterflies, Caterpillar
Ants, Butterflies, pollinators
Allergy
breathing problems, Dizziness, poisonous if ingested
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
along a porch, deck or patio, Showy Purposes, small hedge, Wild gardens
Cottage Garden, Showy Purposes
Beauty Benefits
-
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification, Fixes Nitrogen
Plant Benefits
Medicinal Uses
-
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
-
Leaves, Twigs
Other Uses
Beneficial species for attracting pollinators
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Mixed Border, Tropical
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
DIANELLA caerulea
Symphytum asperum
Common Name
Blue Flax Lily, Blueberry Lily, Paroo Lily
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
blue flax lily
Blackwort
In German
blau Flachs Lilie
Blackwort
In French
Dianella caerulea
Blackwort
In Spanish
Dianella caerulea
Blackwort
In Greek
Dianella caerulea
Blackwort
In Portuguese
blue flax lily
Blackwort
In Polish
blue flax lily
Blackwort
In Latin
blue flax lily
Blackwort
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Monocots
Magnoliopsida
Order
Asparagales
Lamiales
Family
Liliaceae
Boraginaceae
Genus
Dianella
Symphytum
Clade
Angiosperms, Monocots
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
Boraginoideae
Number of Species
735
1
27800
👆🏻