Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
Central Asia, India, Nepal
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
White oak, Bluff oak, Muller oak
Habitat
Cold Regions, stream banks
Clay soil areas, Dry areas, Sandy areas
USDA Hardiness Zone
6-11
6-9
Sunset Zone
21,22
H1, 7, 8, 9, 14, 15, 16, 17, 20, 21, 22, 23, 24
Habit
Upright/Erect
Oval or Rounded
Flower Color
White, Light Pink
Red, Yellow green
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Sandy Brown, Sienna
Leaf Color in Spring
Red, Green, Copper
Green, Light Green, Gray
Leaf Color in Summer
Green, Blue Green
Green, Gray
Leaf Color in Fall
Green, Blue Green
Green, Dark Green, Gray
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
Dark Green, Gray
Leaf Shape
Oval
broad, flat
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Growth Rate
Medium
Medium
Type of Soil
Loam, Sand
Loam
The pH of Soil
Acidic, Neutral
Acidic
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer, Summer
Spring
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Seedlings, Transplanting
Plant Maintenance
Low
Medium
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Average Water Needs
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil pH
Acidic, Neutral
Acidic
Soil Type
Loam, Sand
Loam
Soil Drainage Capacity
Well drained
Average
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Pruning
Cut or pinch the stems, Remove dead leaves
Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
All-Purpose Liquid Fertilizer
Pests and Diseases
Aphids, Stem spot
Red blotch
Plant Tolerance
Shallow soil, Sun
Drought
Flower Petal Number
Single
-
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Glossy
Attracts
Ants, Butterflies, pollinators
Birds
Allergy
Antibacterial, Peripheral Edema
Pollen
Aesthetic Uses
Cottage Garden, Showy Purposes
Showy Purposes
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
-
Environmental Uses
Air purification, Fixes Nitrogen
Air purification, Nesting sites for birds, Shadow Tree, Shelter for wildlife, Wildlife
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Chronic fatigue, Cramps, Diarrhea, Dysentry, gallstones, Haemorrhages, Menstrual Cramps
Part of Plant Used
Leaves, Twigs
Leaves, Seeds, Wood
Other Uses
Used for its medicinal properties
Used as firewood, used for making charcoal
Used As Indoor Plant
No
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Feature Plant, Shade Trees
Botanical Name
Symphytum asperum
QUERCUS leucotrichophora
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Banj Oak, Blackjack Oak, Himalayan Oak
In Hindi
Blackwort
Blackjack Oak Tree
In German
Blackwort
Blackjack Oak Tree
In French
Blackwort
Blackjack Oak Tree
In Spanish
Blackwort
Blackjack Oak Tree
In Greek
Blackwort
Blackjack Oak Tree
In Portuguese
Blackwort
Blackjack Carvalho
In Polish
Blackwort
Blackjack Oak Tree
In Latin
Blackwort
Blackjack quercum ligno
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Family
Boraginaceae
Fagaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Subfamily
Boraginoideae
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Importance of Comfrey and Blackjack Oak
Want to have the most appropriate plant for your garden? You might want to know the importance of Comfrey and Blackjack Oak. Basically, these two plants vary in many aspects. Compare Comfrey and Blackjack Oak as they differ in many characteristics such as their life, care, benefits, facts, etc. Every gardener must at least have the slightest clue about the plants he wants to plant in his garden. Compare their benefits, which differ in many ways like facts and uses. The medicinal use of Comfrey is Asthma, Diarrhea, Obesity and Osteoarthritis whereas of Blackjack Oak is Chronic fatigue, Cramps, Diarrhea, Dysentry, gallstones, Haemorrhages and Menstrual Cramps. Comfrey has beauty benefits as follows: Acne, Beautiful Skin, Reduce Bruises and Remove blemishes while Blackjack Oak has beauty benefits as follows: Acne, Beautiful Skin, Reduce Bruises and Remove blemishes.
Compare Facts of Comfrey vs Blackjack Oak
How to choose the best garden plant for your garden depending upon its facts? Here garden plant comparison will help you to solve this query. Compare the facts of Comfrey vs Blackjack Oak and know which one to choose. As garden plants have benefits and other uses, allergy is also a major drawback of plants for some people. Allergic reactions of Comfrey are Antibacterial and Peripheral Edema whereas of Blackjack Oak have Pollen respectively. Having a fruit bearing plant in your garden can be a plus point of your garden. Comfrey has showy fruits and Blackjack Oak has showy fruits. Also Comfrey is not flowering and Blackjack Oak is not flowering . You can compare Comfrey and Blackjack Oak facts and facts of other plants too.