Life Span
Annual and Perennial
Perennial
Type
Flowering Plants, Shrubs
Shrub
Origin
World/Pandemic, North America, Europe, Russia/Siberia, China, Korea
China, Japan
Types
Bigleaf hydrangea, Hortensia, Smooth hydrangea, Oakleaf hydrangea, Annabelle
-
Habitat
Forest edges, Hillside, Woods
subtropical regions, Temperate Regions
USDA Hardiness Zone
2-11
6-9
Sunset Zone
7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Upright/Erect
Oval or Rounded
Flower Color
Blue, Sky Blue, Indigo, Dark Blue
White, Silver
Flower Color Modifier
Bicolor
-
Fruit Color
Brown, Sandy Brown
Reddish Plum
Leaf Color in Spring
Sea Green, Gray Green
White, Dark Green, Sienna
Leaf Color in Summer
Sea Green, Gray Green
White, Dark Green, Sienna
Leaf Color in Fall
Sea Green, Gray Green
White, Dark Green, Sienna
Leaf Color in Winter
Light Green
White, Dark Green, Sienna
Leaf Shape
Oblovate
broad, flat
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall, Winter
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Very Fast
Fast
Type of Soil
Loam, Sand
Clay, Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral, Alkaline
Soil Drainage
Well drained
Well drained
Bloom Time
Indeterminate
Fall, Late Fall
Tolerances
Drought
Pollution, Salt
Where to Plant?
Container, Ground, Pot
Ground, Pot
How to Plant?
Seedlings
Cuttings, root cutting, Seedlings
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, Alkaline
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 damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
Compost
All-Purpose Liquid Fertilizer
Pests and Diseases
Bacterial leaf spot, Botrytis Blight, Leafminers, Mealybugs, Mushroom root rot
Coral Spot, Leaf spot, Red blotch
Plant Tolerance
Drought
Drought
Flowers
Showy
Insignificant
Flower Petal Number
Single
Single
Foliage Texture
Medium
Medium
Foliage Sheen
Matte
Matte
Attracts
Butterflies
Birds
Allergy
Chest tightness, Diarrhea, Dizziness, Nausea, Vomiting
Toxic
Aesthetic Uses
Beautification, Bouquets, Landscape Designing, Showy Purposes
Bonsai, Cottage Garden, Ground Cover
Beauty Benefits
-
Skin irritation
Environmental Uses
Air purification, Food for insects, Indoor Air Purification, Prevent Soil Erosion, Very little waste
Fixes Nitrogen
Medicinal Uses
Fever, Kidney problems, Urinary tract problems
Antiasthamatic, Antitussive, Astringent
Part of Plant Used
Flowers, Root
Fruits, Leaves, Root, 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 Ornamental plant, Used for making hedge
Used As Indoor Plant
Yes
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Container, Herb
Feature Plant, Hedges, Screening, Wind Break
Botanical Name
CENTAUREA cyanus
Elaeagnus pungens
Common Name
Batchelor's Buttons, Cornflower
Silverthorn
In Hindi
Hydrangea
Silverthorn
In German
Hortensie
Silverthorn
In French
Hortensia
Silverthorn
In Spanish
Hortensia
Silverthorn
In Greek
υδραγεία
Silverthorn
In Portuguese
Hortênsia
Silverthorn
In Polish
Hortensja
Silverthorn
In Latin
Hibiscus
Silverthorn
Phylum
Anthophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Asterales
Rhamnales
Family
Asteraceae
Elaeagnaceae
Genus
Centaurea
Elaeagnus
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots, Rosids
Season and Care of Cornflower and Silverthorn
Season and care of Cornflower and Silverthorn is important to know. While considering everything about Cornflower and Silverthorn Care, growing season is an essential factor. Cornflower season is Spring, Summer and Fall and Silverthorn season is Spring, Summer and Fall. The type of soil for Cornflower is Loam, Sand and for Silverthorn is Clay, Loam, Sand while the PH of soil for Cornflower is Acidic, Neutral, Alkaline and for Silverthorn is Acidic, Neutral, Alkaline.
Cornflower and Silverthorn Physical Information
Cornflower and Silverthorn physical information is very important for comparison. Cornflower height is 30.00 cm and width 30.00 cm whereas Silverthorn height is 300.00 cm and width 300.00 cm. The color specification of Cornflower and Silverthorn are as follows:
Cornflower flower color: Blue, Sky Blue, Indigo and Dark Blue
Cornflower leaf color: Sea Green and Gray Green
Silverthorn flower color: White and Silver
- Silverthorn leaf color: White, Dark Green and Sienna
Care of Cornflower and Silverthorn
Care of Cornflower and Silverthorn include pruning, fertilizers, watering etc. Cornflower pruning is done Prune to control growth, Remove damaged leaves, Remove dead branches and Remove dead leaves and Silverthorn pruning is done Remove damaged leaves, Remove dead branches and Remove dead leaves. In summer Cornflower needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Silverthorn needs Lots of watering and in winter, it needs Average Water.