Life Span
Annual and Perennial
Perennial
Type
Flowering Plants, Shrubs
Broadleaf Evergreen
Origin
World/Pandemic, North America, Europe, Russia/Siberia, China, Korea
Asia, Nepal, China, Japan, Korea
Types
Bigleaf hydrangea, Hortensia, Smooth hydrangea, Oakleaf hydrangea, Annabelle
Apricot Gold, Butter Yellow, Orange Supreme, Dan
Habitat
Forest edges, Hillside, Woods
Dappled Shade, Woodland Garden Canopy
USDA Hardiness Zone
2-11
6-11
AHS Heat Zone
7 - 1
12 - 8
Sunset Zone
7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
21,22
Habit
Upright/Erect
Upright/Erect
Flower Color
Blue, Sky Blue, Indigo, Dark Blue
White, Orange
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown, Sandy Brown
Blue, Black
Leaf Color in Spring
Sea Green, Gray Green
Green, Dark Green
Leaf Color in Summer
Sea Green, Gray Green
Dark Green
Leaf Color in Fall
Sea Green, Gray Green
Dark Green
Leaf Color in Winter
Light Green
Dark Green
Leaf Shape
Oblovate
Oval, Finely Dentate
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall, Winter
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Very Fast
Medium
Type of Soil
Loam, Sand
Clay, Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Indeterminate
Spring, Late Spring, Early Fall, Fall
Where to Plant?
Container, Ground, Pot
Container, Ground, Pot
How to Plant?
Seedlings
Semi-hardwood cuttings
Plant Maintenance
Medium
Medium
Watering Requirements
Keep ground moist, Requires a lot of watering, Requires regular watering, Requires watering in the 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
Slightly Acidic
Acidic, Neutral
Soil Type
Loamy
Clay, Loam, Sand
Soil Drainage Capacity
Loamy
Well drained
Sun Exposure
Full Sun
Full Sun, Partial Sun, Partial shade
Pruning
Prune to control growth, Remove damaged leaves, Remove dead branches, Remove dead leaves
Remove no more than one-third of each branch
Fertilizers
Compost
All-purpose dry fertilizer
Pests and Diseases
Bacterial leaf spot, Botrytis Blight, Leafminers, Mealybugs, Mushroom root rot
-
Plant Tolerance
Drought
Drought
Flower Petal Number
Single
Single
Foliage Texture
Medium
Medium
Foliage Sheen
Matte
Glossy
Attracts
Butterflies
Nematodes
Allergy
Chest tightness, Diarrhea, Dizziness, Nausea, Vomiting
-
Aesthetic Uses
Beautification, Bouquets, Landscape Designing, Showy Purposes
Beautification, Showy Purposes
Beauty Benefits
-
Good for skin and hair
Environmental Uses
Air purification, Food for insects, Indoor Air Purification, Prevent Soil Erosion, Very little waste
Air purification
Medicinal Uses
Fever, Kidney problems, Urinary tract problems
Antitussive
Part of Plant Used
Flowers, Root
Bark, Flowers, Fruits, Stem
Other Uses
Can be made into a herbal tea, Decoration Purposes, Employed in herbal medicine, Showy Purposes, Used as Ornamental plant, Used for its medicinal properties
Used as essential oil, Used as insect repellent, Used in herbal medicines, Used in tea, wine and sweet dishes
Used As Indoor Plant
Yes
Yes
Used As Outdoor Plant
Yes
Yes
Garden Design
Container, Herb
Container, Feature Plant, Hedges, Houseplant, Mixed Border, Screening, Wind Break, Topiary, Bonsai, Espalier
Botanical Name
CENTAUREA cyanus
OSMANTHUS fragrans
Common Name
Batchelor's Buttons, Cornflower
Sweet olive, Sweet osmanthus, Tea olive
In Hindi
Hydrangea
Sweet Olive
In German
Hortensie
Sweet Olive
In French
Hortensia
Olive douce
In Spanish
Hortensia
Oliva dulce
In Greek
υδραγεία
γλυκό Ελιά
In Portuguese
Hortênsia
Olive doce
In Polish
Hortensja
słodki Olive
In Latin
Hibiscus
Dulce Olive
Phylum
Anthophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Asterales
Scrophulariales
Family
Asteraceae
Oleaceae
Genus
Centaurea
Osmanthus
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Asterids, Eudicots
Season and Care of Cornflower and Sweet Olive
Season and care of Cornflower and Sweet Olive is important to know. While considering everything about Cornflower and Sweet Olive Care, growing season is an essential factor. Cornflower season is Spring, Summer and Fall and Sweet Olive season is Spring, Summer and Fall. The type of soil for Cornflower is Loam, Sand and for Sweet Olive is Clay, Loam, Sand while the PH of soil for Cornflower is Acidic, Neutral, Alkaline and for Sweet Olive is Acidic, Neutral.
Cornflower and Sweet Olive Physical Information
Cornflower and Sweet Olive physical information is very important for comparison. Cornflower height is 30.00 cm and width 30.00 cm whereas Sweet Olive height is 30.00 cm and width 180.00 cm. The color specification of Cornflower and Sweet Olive are as follows:
Cornflower flower color: Blue, Sky Blue, Indigo and Dark Blue
Cornflower leaf color: Sea Green and Gray Green
Sweet Olive flower color: White and Orange
- Sweet Olive leaf color: Green and Dark Green
Care of Cornflower and Sweet Olive
Care of Cornflower and Sweet Olive include pruning, fertilizers, watering etc. Cornflower pruning is done Prune to control growth, Remove damaged leaves, Remove dead branches and Remove dead leaves and Sweet Olive pruning is done Remove no more than one-third of each branch. In summer Cornflower needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Sweet Olive needs Lots of watering and in winter, it needs Average Water.