Life Span
Perennial
Annual and Perennial
Type
Tree
Flowering Plants, Shrubs
Origin
United States, California
World/Pandemic, North America, Europe, Russia/Siberia, China, Korea
Types
-
Bigleaf hydrangea, Hortensia, Smooth hydrangea, Oakleaf hydrangea, Annabelle
Habitat
Woodland Garden Canopy
Forest edges, Hillside, Woods
USDA Hardiness Zone
6-9
2-11
Sunset Zone
3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
Habit
Spreading
Upright/Erect
Flower Color
Red, Yellow green
Blue, Sky Blue, Indigo, Dark Blue
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Brown, Sandy Brown
Leaf Color in Spring
Green, Blue Green
Sea Green, Gray Green
Leaf Color in Summer
Green, Blue Green
Sea Green, Gray Green
Leaf Color in Fall
Yellow, Orange, Pink
Sea Green, Gray Green
Leaf Color in Winter
-
Light Green
Leaf Shape
Irregular
Oblovate
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Growth Rate
Slow
Very Fast
Type of Soil
-
Loam, Sand
The pH of Soil
-
Acidic, Neutral, Alkaline
Soil Drainage
-
Well drained
Bloom Time
Spring
Indeterminate
Tolerances
Drought
Drought
Where to Plant?
Ground
Container, Ground, Pot
How to Plant?
Seedlings
Seedlings
Plant Maintenance
Medium
Medium
Watering Requirements
Average Water Needs
Keep ground moist, Requires a lot of watering, Requires regular watering, Requires watering in the growing season
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil pH
-
Slightly Acidic
Soil Drainage Capacity
-
Loamy
Sun Exposure
Full Sun, Partial Sun
Full Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts
Prune to control growth, Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
Compost
Pests and Diseases
Red blotch
Bacterial leaf spot, Botrytis Blight, Leafminers, Mealybugs, Mushroom root rot
Plant Tolerance
Drought
Drought
Flowers
Insignificant
Showy
Flower Petal Number
-
Single
Foliage Texture
Medium
Medium
Attracts
Birds
Butterflies
Allergy
Pollen
Chest tightness, Diarrhea, Dizziness, Nausea, Vomiting
Aesthetic Uses
Borders
Beautification, Bouquets, Landscape Designing, Showy Purposes
Environmental Uses
Air purification, Shadow Tree, soil erosion prevension on hill slopes, Wildlife, Windbreak
Air purification, Food for insects, Indoor Air Purification, Prevent Soil Erosion, Very little waste
Medicinal Uses
Astringent, Diarrhea, Dysentry, Haemorrhages, Poultice, Sore Eyes, Sore throat
Fever, Kidney problems, Urinary tract problems
Part of Plant Used
Leaves, Seeds, Wood
Flowers, Root
Other Uses
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
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 Indoor Plant
No
Yes
Used As Outdoor Plant
Yes
Yes
Garden Design
Feature Plant, Shade Trees, Street Trees
Container, Herb
Botanical Name
QUERCUS douglasii
CENTAUREA cyanus
Common Name
Blue Oak
Batchelor's Buttons, Cornflower
In Hindi
Blue Oak Tree
Hydrangea
In German
Blaue Eiche
Hortensie
In French
Bleu Oak Tree
Hortensia
In Spanish
Azul del árbol de roble
Hortensia
In Greek
Μπλε Oak Tree
υδραγεία
In Portuguese
Carvalho azul
Hortênsia
In Polish
Niebieski Oak Tree
Hortensja
In Latin
Blue quercum ligno
Hibiscus
Phylum
Magnoliophyta
Anthophyta
Class
Magnoliopsida
Magnoliopsida
Family
Fagaceae
Asteraceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Season and Care of Blue Oak and Cornflower
Season and care of Blue Oak and Cornflower is important to know. While considering everything about Blue Oak and Cornflower Care, growing season is an essential factor. Blue Oak season is Spring, Summer, Fall and Winter and Cornflower season is Spring, Summer, Fall and Winter. The type of soil for Blue Oak is and for Cornflower is Loam, Sand while the PH of soil for Blue Oak is and for Cornflower is Acidic, Neutral, Alkaline.
Blue Oak and Cornflower Physical Information
Blue Oak and Cornflower physical information is very important for comparison. Blue Oak height is 1,520.00 cm and width 1,370.00 cm whereas Cornflower height is 30.00 cm and width 30.00 cm. The color specification of Blue Oak and Cornflower are as follows:
Blue Oak flower color: Red and Yellow green
Blue Oak leaf color: Green and Blue Green
Cornflower flower color: Blue, Sky Blue, Indigo and Dark Blue
- Cornflower leaf color: Sea Green and Gray Green
Care of Blue Oak and Cornflower
Care of Blue Oak and Cornflower include pruning, fertilizers, watering etc. Blue Oak pruning is done Remove damaged leaves, Remove dead branches, Remove dead leaves and Remove dead or diseased plant parts and Cornflower pruning is done Prune to control growth, Remove damaged leaves, Remove dead branches and Remove dead leaves. In summer Blue Oak needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Cornflower needs Lots of watering and in winter, it needs Average Water.