Life Span
Annual
Perennial
Type
Vegetable
Broadleaf Evergreen
Origin
North America, Central America, South America
Europe, Russia
Types
-
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
12
0
40000
👆🏻
Habitat
Clay soil areas, Loamy soils, Sandy areas
Cold Regions, stream banks
USDA Hardiness Zone
-99996-11
0
99
👆🏻
AHS Heat Zone
12-4
-
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
21,22
Habit
Upright/Erect
Upright/Erect
Plant Size
Minimum Height
180.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
60.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
-
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
White, Yellow, Light Yellow, Peach
Orange Red
Leaf Color in Spring
Green, Dark Green
Red, Green, Copper
Leaf Color in Summer
Green, Dark Green
Green, Blue Green
Leaf Color in Fall
Green, Dark Green
Green, Blue Green
Leaf Color in Winter
Green, Dark Green
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Long Linear
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Very Fast
Medium
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Neutral
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Indeterminate
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
-
Where to Plant?
Ground, Pot
Container, Ground
How to Plant?
Seedlings, Transplanting
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Average Water Needs, Do Not over Water, Needs watering once a week, Never Over-water, Over-head 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
Neutral
Acidic, Neutral
Soil Type
Clay, Loam, Sand
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full 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
Nitrogen, Phosphorous, Potassium, Well-rotted manure
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Aphids, Armyworm, Beetles, Flea Beetles, Leaf spot, Red blotch, Seedcorn maggot, Worms
Aphids, Stem spot
Plant Tolerance
Drought
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
Coarse
Medium
Foliage Sheen
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Aphids, Beetles
Ants, Butterflies, pollinators
Allergy
Asthma, Diarrhea, Headache, Nausea, Runny nose, Skin rash, sneezing, Vomiting
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
-
Cottage Garden, Showy Purposes
Beauty Benefits
-
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Edible Uses
✔
✘
✔
✘
Environmental Uses
Food for animals, Food for birds, Food for insects
Air purification, Fixes Nitrogen
Plant Benefits
Medicinal Uses
Iron, Potassium, Vitamin C
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Kernel
Leaves, Twigs
Other Uses
Used as a nutritious food item, Used for its medicinal properties
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Edible, Herb, Vegetable
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
ZEA mays var rugosa
Symphytum asperum
Common Name
Sweet Corn
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
स्वीट कॉर्न
Blackwort
In German
Mais
Blackwort
In French
Le maïs sucré
Blackwort
In Spanish
Maíz dulce
Blackwort
In Greek
γλυκό καλαμπόκι
Blackwort
In Portuguese
milho doce
Blackwort
In Polish
Kukurydza
Blackwort
In Latin
Dulcis frumentum
Blackwort
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Liliopsida
Magnoliopsida
Order
Cyperales
Lamiales
Family
Poaceae
Boraginaceae
Genus
Zea
Symphytum
Clade
Angiosperms, Commelinids, Monocots
Angiosperms, Eudicots, Rosids
Tribe
Andropogoneae
-
Subfamily
-
Boraginoideae
Number of Species
135
1
27800
👆🏻