Life Span
Annual and Perennial
Perennial
Type
Broadleaf Evergreen
Broadleaf Evergreen
Origin
China
Europe, Russia
Types
Osmanthus fragrans
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
302
0
40000
👆🏻
Habitat
Lowland, shaded fields, Shaded sites, Slopes, Subtropical climates
Cold Regions, stream banks
USDA Hardiness Zone
7-996-11
0
99
👆🏻
AHS Heat Zone
-
-
Sunset Zone
21,22
21,22
Habit
Oval or Rounded
Upright/Erect
Plant Size
Minimum Height
180.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
180.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Dark Blue, Black
Orange Red
Leaf Color in Spring
Gray Green, Dark Green
Red, Green, Copper
Leaf Color in Summer
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
Oval
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Growth Rate
Slow
Medium
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Early Spring, Late Winter
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
-
Where to Plant?
Ground, Pot
Container, Ground
How to Plant?
Seedlings, Vegetative Reproduction
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Allow soil to be completely dry in between waterings, Requires watering in the growing season, Water Deeply, Water deeply about once a week
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, Alkaline
Acidic, Neutral
Soil Type
Clay, Loam, Sand
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Pruning
Do not prune during shooting season, No pruning needed in the early stages, Prune to stimulate growth, Remove dead or diseased plant parts, Remove deadheads, Shape and thin as needed
Cut or pinch the stems, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Pests and diseases free
Aphids, Stem spot
Plant Tolerance
Drought
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
Fine
Medium
Foliage Sheen
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Bees
Ants, Butterflies, pollinators
Allergy
-
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
Beautification
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
Antioxidants
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Flowers, Fruits, Leaf Stalks, Leaves
Leaves, Twigs
Other Uses
Culinary use, Used for fragrance, Used for producing cooking oil, Used as a spice
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Foundation, Hedges, Mixed Border
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
OSMANTHUS delavayi
Symphytum asperum
Common Name
Sweet Olive
Tea Olive
Fragrant Olive
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
चाय ओलिव
Blackwort
In German
Tea Olive
Blackwort
In French
Tea Olive
Blackwort
In Spanish
té verde oliva
Blackwort
In Greek
τσάι Ελιάς
Blackwort
In Portuguese
Tea Olive
Blackwort
In Polish
Herbata z oliwek
Blackwort
In Latin
Tea Olive
Blackwort
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Lamiales
Lamiales
Family
Oleaceae
Boraginaceae
Genus
Osmanthus
Symphytum
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
Boraginoideae
Number of Species
3035
1
27800
👆🏻