Life Span
Perennial
Perennial
Type
Tree
Broadleaf Evergreen
Origin
Southern Europe, Mediterranean, Northern Africa
Europe, Russia
Types
Quercus nigra, Quercus laurifolia
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
82
0
40000
👆🏻
Habitat
-
Cold Regions, stream banks
USDA Hardiness Zone
7-96-11
0
99
👆🏻
AHS Heat Zone
9-7
-
Sunset Zone
7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
21,22
Habit
Oval or Rounded
Upright/Erect
Plant Size
Minimum Height
1,220.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
1,220.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Light Green
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown, Chocolate, Black
Orange Red
Leaf Color in Spring
Light Green, Bronze
Red, Green, Copper
Leaf Color in Summer
Gray Green, Dark Green
Green, Blue Green
Leaf Color in Fall
Gray Green, Dark Green
Green, Blue Green
Leaf Color in Winter
Gray Green, Dark Green
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Oblong or Lanceolate
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Medium
Medium
Type of Soil
Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Average
Well drained
Bloom Time
Early Spring, Spring
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Pollution
-
Where to Plant?
Ground
Container, Ground
How to Plant?
Grafting, Seedlings
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Average Water Needs, Do Not over Water, Requires regular watering
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
Acidic, Neutral
Acidic, Neutral
Soil Type
Loam, Sand
Loam, Sand
Soil Drainage Capacity
Average
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Cut or pinch the stems, Remove dead leaves
Fertilizers
fertilize in fall, Nitrogen, Phosphorous, Potassium
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Aphids, Moth
Aphids, Stem spot
Plant Tolerance
Pollution, Shade areas
Shallow soil, 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
Fine
Medium
Foliage Sheen
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds
Ants, Butterflies, pollinators
Allergy
sneezing, Vomiting, Watery eyes
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
Cottage Garden
Cottage Garden, Showy Purposes
Beauty Benefits
Good for skin, Skin Problems
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Edible Uses
✔
✘
✔
✘
Environmental Uses
Nesting sites for birds, Shadow Tree
Air purification, Fixes Nitrogen
Plant Benefits
Medicinal Uses
Digestive, Skin irritation
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Bark, Fruits, Wood
Leaves, Twigs
Other Uses
Charcoal, Used as firewood, Used for its medicinal properties, Wood is used fore making tools
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Screening / Wind Break, Shade Trees, Street Trees
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
QUERCUS laurifolia
Symphytum asperum
Common Name
Darlington Oak, Diamond-leaf Oak, Laurel Oak, Laurel-leaf Oak, Swamp Laurel Oak, Water Oak
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
Quercus
Blackwort
In German
Quercus
Blackwort
In French
Quercus
Blackwort
In Spanish
Quercus
Blackwort
In Greek
Quercus
Blackwort
In Portuguese
Quercus
Blackwort
In Polish
Quercus
Blackwort
In Latin
Quercus
Blackwort
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Lamiales
Family
Fagaceae
Boraginaceae
Genus
Quercus
Symphytum
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
Boraginoideae
Number of Species
45035
1
27800
👆🏻