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
-
Habitat
Forest edges, Hillside, Woods
Lowland evergreen rainforest
USDA Hardiness Zone
2-11
4-7
Sunset Zone
7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17
Habit
Upright/Erect
Pyramidal
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
-
Leaf Shape
Oblovate
Ovate
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall
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
Tolerances
Drought
Maritime exposure, Salt water
Where to Plant?
Container, Ground, Pot
Ground
How to Plant?
Seedlings
Layering, 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
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
-
Plant Tolerance
Drought
Maritime exposure, Salt water
Flowers
Showy
Insignificant
Flower Petal Number
Single
-
Foliage Texture
Medium
Medium
Foliage Sheen
Matte
Glossy
Attracts
Butterflies
Insects
Allergy
Chest tightness, Diarrhea, Dizziness, Nausea, Vomiting
-
Aesthetic Uses
Beautification, Bouquets, Landscape Designing, Showy Purposes
-
Beauty Benefits
-
Skin Problems
Environmental Uses
Air purification, Food for insects, Indoor Air Purification, Prevent Soil Erosion, Very little waste
Air purification, Prevent Soil Erosion, Shadow Tree
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
Phylum
Anthophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Family
Asteraceae
Betulaceae
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots, Rosids
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: while Red Alder has beauty benefits as follows: .
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 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.