Life Span
Annual and Perennial
  
Perennial
  
Type
Flowering Plants, Shrubs
  
Tree
  
Origin
World/Pandemic, North America, Europe, Russia/Siberia, China, Korea
  
North America, United States, Northwestern United States, Alaska, California, Canada
  
Types
Bigleaf hydrangea, Hortensia, Smooth hydrangea, Oakleaf hydrangea, Annabelle
  
Not available
  
Number of Varieties
Not Available
  
Habitat
Forest edges, Hillside, Woods
  
Lowland evergreen rainforest
  
USDA Hardiness Zone
2-11
  
4-7
  
AHS Heat Zone
7 - 1
  
7-1
  
Sunset Zone
Not Available
  
3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17
  
Habit
Upright/Erect
  
Pyramidal
  
Plant Size
  
  
Minimum Height
1,370.00 cm
  
31
Plant Color
  
  
Flower Color
Blue, Sky Blue, Indigo, Dark Blue
  
Yellow, Red, Coral
  
Flower Color Modifier
Bicolor
  
Bicolor
  
Fruit Color
Brown, Sandy Brown
  
Brown
  
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
  
Not Available
  
Shape
  
  
Leaf Shape
Oblovate
  
Ovate
  
Thorns
No
  
No
  
Plant Season
Spring, Summer, Fall
  
Spring, Summer, Fall
  
Growing Conditions
  
  
Sunlight
Full Sun, Partial Sun
  
Full Sun, Partial Sun, Partial shade
  
Growth Rate
Very Fast
  
Fast
  
Type of Soil
Loam, Sand
  
Loam, Sand
  
The pH of Soil
Acidic, Neutral, Alkaline
  
Acidic, Neutral, Alkaline
  
Soil Drainage
Well drained
  
Average
  
Bloom Time
Indeterminate
  
Early Spring
  
Repeat Bloomer
Yes
  
No
  
Tolerances
Drought
  
Maritime exposure, Salt water
  
Where to Plant?
Container, Ground, Pot
  
Ground
  
How to Plant?
Seedlings
  
Layering, Seedlings
  
Plant Maintenance
Medium
  
Medium
  
Watering Plants
  
  
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
  
  
Soil pH
Slightly Acidic
  
Acidic, Neutral, Alkaline
  
Soil Type
Loamy
  
Loam, Sand
  
Soil Drainage Capacity
Loamy
  
Average
  
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, Nitrogen
  
Pests and Diseases
Bacterial leaf spot, Botrytis Blight, Leafminers, Mealybugs, Mushroom root rot
  
Not Available
  
Plant Tolerance
Drought
  
Maritime exposure, Salt water
  
Flowers
Showy
  
Insignificant
  
Flower Petal Number
Single
  
Not Available
  
Fruits
  
  
Showy Fruit
No
  
Yes
  
Edible Fruit
No
  
No
  
Fragrance
  
  
Fragrant Flower
Yes
  
No
  
Fragrant Fruit
No
  
No
  
Fragrant Leaf
No
  
No
  
Fragrant Bark/Stem
No
  
No
  
Showy Foliage
No
  
Yes
  
Showy Bark
No
  
Yes
  
Foliage Texture
Medium
  
Medium
  
Foliage Sheen
Matte
  
Glossy
  
Evergreen
No
  
No
  
Invasive
Sometimes
  
No
  
Self-Sowing
Yes
  
Yes
  
Attracts
Butterflies
  
Insects, Not Available
  
Allergy
Chest tightness, Diarrhea, Dizziness, Nausea, Vomiting
  
Not Available
  
Uses
  
  
Aesthetic Uses
Beautification, Bouquets, Landscape Designing, Showy Purposes
  
Not Used For Aesthetic Purpose
  
Beauty Benefits
Not Available
  
Skin Problems
  
Edible Uses
Yes
  
Yes
  
Environmental Uses
Air purification, Food for insects, Indoor Air Purification, Prevent Soil Erosion, Very little waste
  
Air purification, Prevent Soil Erosion, Shadow Tree
  
Plant Benefits
  
  
Medicinal Uses
Fever, Kidney problems, Urinary tract problems
  
Anodyne, Appetizer, Astringent
  
Part of Plant Used
Flowers, Root
  
Flowers, Inner Bark, Sap
  
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 a dye, used for making charcoal, Used for making informal hedge
  
Used As Indoor Plant
Yes
  
No
  
Used As Outdoor Plant
Yes
  
Yes
  
Garden Design
Container, Herb
  
Screening / Wind Break, Shade Trees
  
Botanical Name
CENTAUREA cyanus
  
ALNUS rubra
  
Common Name
Batchelor's Buttons, Cornflower
  
Oregon Alder, Red Alder
  
In Hindi
Hydrangea
  
red alder
  
In German
Hortensie
  
rot-Erle
  
In French
Hortensia
  
aulne rouge
  
In Spanish
Hortensia
  
aliso rojo
  
In Greek
υδραγεία
  
κόκκινη σκλήθρα
  
In Portuguese
Hortênsia
  
amieiro vermelho
  
In Polish
Hortensja
  
czerwony olcha
  
In Latin
Hibiscus
  
red alnus
  
Kingdom
Plantae
  
Plantae
  
Phylum
Anthophyta
  
Magnoliophyta
  
Class
Magnoliopsida
  
Magnoliopsida
  
Order
Asterales
  
Fagales
  
Family
Asteraceae
  
Betulaceae
  
Genus
Centaurea
  
Alnus
  
Clade
Angiosperms, Asterids, Eudicots
  
Angiosperms, Eudicots, Rosids
  
Tribe
Cynareae
  
Not Available
  
Subfamily
Carduoideae
  
Not Available
  
Number of Species
Not Available
  
Importance of Cornflower and Red Alder
Want to have the most appropriate plant for your garden? You might want to know the importance of Cornflower and Red Alder. Basically, these two plants vary in many aspects. Compare Cornflower and Red Alder 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 Cornflower is Fever, Kidney problems and Urinary tract problems whereas of Red Alder is Anodyne, Appetizer and Astringent. Cornflower has beauty benefits as follows: Not Available while Red Alder has beauty benefits as follows: Not Available.
Compare Facts of Cornflower vs Red Alder
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 Cornflower vs Red Alder 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 Cornflower are Chest tightness, Diarrhea, Dizziness, Nausea and Vomiting whereas of Red Alder have Not Available respectively. Having a fruit bearing plant in your garden can be a plus point of your garden. Cornflower has no showy fruits and Red Alder has showy fruits. Also Cornflower is not flowering and Red Alder is not flowering . You can compare Cornflower and Red Alder facts and facts of other plants too.