Life Span
Perennial
Perennial
Origin
United States, California
Hybrid origin
Types
Not Available
Not Available
Habitat
Woodland Garden Canopy
Damp Places, Marshy ground
USDA Hardiness Zone
6-9
6-9
Sunset Zone
3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Spreading
Clump-Forming
Flower Color
Red, Yellow green
Yellow, Red, Orange, Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Not Available
Not Available
Leaf Color in Spring
Green, Blue Green
Green, Blue Green
Leaf Color in Summer
Green, Blue Green
Green, Blue Green
Leaf Color in Fall
Yellow, Orange, Pink
Blue Green, Gray Green, Light Yellow
Leaf Color in Winter
Not Available
Light Green
Leaf Shape
Irregular
Linear
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Type of Soil
Not Available
Clay, Loam, Sand
The pH of Soil
Not Available
Acidic, Neutral
Soil Drainage
Not Available
Well drained
Bloom Time
Spring
Early Summer, Summer
Tolerances
Drought
Drought
Where to Plant?
Ground
Container, Ground
How to Plant?
Seedlings
Divison, Seedlings
Plant Maintenance
Medium
Medium
Watering Requirements
Average Water Needs
Needs more water during establishment, Water Deeply, Water in morning to avoid prompting diseases, Water in the early morning hours
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil pH
Not Available
Acidic, Neutral
Soil Type
Not Available
Clay, Loam, Sand
Soil Drainage Capacity
Not Available
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts
Cut or pinch the stems, Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer, Apply N-P-K
Pests and Diseases
Red blotch
Onion thrips, Red blotch, Root rot
Plant Tolerance
Drought
Drought, Moisture
Flowers
Insignificant
Yes
Flower Petal Number
Not Available
Single
Foliage Texture
Medium
Coarse
Foliage Sheen
Not Available
Matte
Allergy
Pollen
Not Available
Aesthetic Uses
Borders
Borders, Cottage Garden, Ground Cover
Beauty Benefits
Not Available
Not Available
Environmental Uses
Air purification, Shadow Tree, soil erosion prevension on hill slopes, Wildlife, Windbreak
Air purification
Medicinal Uses
Astringent, Diarrhea, Dysentry, Haemorrhages, Poultice, Sore Eyes, Sore throat
Not Available
Part of Plant Used
Leaves, Seeds, Wood
Not Available
Other Uses
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
Not Available
Used As Indoor Plant
No
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Feature Plant, Shade Trees, Street Trees
Container, Cutflower, Mixed Border, Rock Garden, Wall
Botanical Name
QUERCUS douglasii
KNIPHOFIA 'Border Ballet'
Common Name
Blue Oak
Tritoma, Wisley Blue Spring Starflower, Wisley Blue Springstar
In Hindi
Blue Oak Tree
Tritoma
In German
Blaue Eiche
Tritoma
In French
Bleu Oak Tree
Tritoma
In Spanish
Azul del árbol de roble
tritoma
In Greek
Μπλε Oak Tree
tritoma
In Portuguese
Carvalho azul
Tritoma
In Polish
Niebieski Oak Tree
Tritoma
In Latin
Blue quercum ligno
Trytoma
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Asparagales
Family
Fagaceae
Liliaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Monocots
Tribe
Not Available
Not Available
Subfamily
Not Available
Not Available
Number of Species
Not Available
Season and Care of Blue Oak and Tritoma
Season and care of Blue Oak and Tritoma is important to know. While considering everything about Blue Oak and Tritoma Care, growing season is an essential factor. Blue Oak season is Spring, Summer, Fall and Winter and Tritoma season is Spring, Summer, Fall and Winter. The type of soil for Blue Oak is Not Available and for Tritoma is Clay, Loam, Sand while the PH of soil for Blue Oak is Not Available and for Tritoma is Acidic, Neutral.
Blue Oak and Tritoma Physical Information
Blue Oak and Tritoma physical information is very important for comparison. Blue Oak height is 1,520.00 cm and width 1,370.00 cm whereas Tritoma height is 45.70 cm and width 50.80 cm. The color specification of Blue Oak and Tritoma are as follows:
Blue Oak flower color: Red and Yellow green
Blue Oak leaf color: Green and Blue Green
Tritoma flower color: Yellow, Red, Orange and Pink
- Tritoma leaf color: Green and Blue Green
Care of Blue Oak and Tritoma
Care of Blue Oak and Tritoma 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 Tritoma pruning is done Cut or pinch the stems, 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 Tritoma needs Lots of watering and in winter, it needs Average Water.