Life Span
Perennial
Perennial
Type
Ornamental Grasses and Bamboo
Tree
Origin
Southern Europe, Western Europe, Mediterranean
North America, United States, Northeastern United States, Mid-Atlantic United States, Southeastern United States, North-Central United States, Central United States, South-Central United States, Canada
Types
-
Japanese Evergreen Oak, Sawthorn Oak, Oriental White Oak
Number of Varieties
1020
0
40000
👆🏻
Habitat
Desert, Dry areas, Dry Forest, Rocky areas
Woodland Garden Canopy
USDA Hardiness Zone
4-94-8
0
99
👆🏻
AHS Heat Zone
9 - 1
8-1
Sunset Zone
1a, 1b, 2a, 2b, 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
Habit
Cushion/Mound-forming
Upright/Erect
Plant Size
Minimum Height
45.00 cm2,438.40 cm
0
3900
👆🏻
Minimum Width
60.96 cm1,219.20 cm
0
6350
👆🏻
Plant Color
Flower Color
Blue Green
Red, Light Yellow, Yellow green
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Brown, Sandy Brown, Chocolate
Leaf Color in Spring
Blue Green, Silver, Gray
Green, Copper
Leaf Color in Summer
Light Green
Dark Green
Leaf Color in Fall
Blue Green, Silver, Gray
Orange, Brown, Dark Red
Leaf Color in Winter
Blue Green, Tan, Silver, Gray
-
Shape
Leaf Shape
Grass like
Lobed
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun
Full Sun, Partial Sun
Growth Rate
Medium
Slow
Type of Soil
Clay, Loam, Sand
Clay, Loam, Sand
The pH of Soil
Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer
Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Salt
Wet Site, Drought
Where to Plant?
Container, Ground
Ground
How to Plant?
Rooted stem cutting, Seedlings, Stem Planting
Seedlings, Transplanting
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs, occasional watering once established, Requires regular watering, Requires watering in the growing season
Average Water Needs, Keep the ground moist but not water-logged, Needs a lot of water initially, occasional watering once established, Water Deeply
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral, Alkaline
Acidic, Neutral
Soil Type
Clay, Loam, Sand
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Average
Sun Exposure
Full Sun
Full Sun, Partial Sun
Pruning
Cut or pinch the stems, Pinch Tips, Remove damaged leaves, Remove dead branches, Remove dead leaves
Remove branches, Remove damaged fruit, Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts, Remove deadheads
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer, High amounts of nutrients, organic fertlizers
Pests and Diseases
Red blotch
Red blotch
Plant Tolerance
Salt
Drought, Wet Site
Flowers
✔
✘
✔
✘
Flower Petal Number
Single
-
Fruits
Showy Fruit
✔
✘
✔
✘
Edible Fruit
✔
✘
✔
✘
Fragrance
Fragrant Flower
✔
✘
✔
✘
Fragrant Fruit
✔
✘
✔
✘
Fragrant Leaf
✔
✘
✔
✘
Fragrant Bark/Stem
✔
✘
✔
✘
Showy Foliage
✔
✘
✔
✘
Showy Bark
✔
✘
✔
✘
Foliage Texture
Fine
Medium
Foliage Sheen
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Butterflies, Hummingbirds
Birds
Allergy
Asthma, Itchiness, Rash, Rhinitis
Hay fever, Itchy eyes, Runny nose, sneezing, Watery eyes, Whooping Cough
Uses
Aesthetic Uses
Ground Cover
-
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification, Nesting sites for birds, Shadow Tree, Shelter for wildlife, Wildlife
Plant Benefits
Medicinal Uses
-
Antiaphonic, Antiasthamatic, Astringent, Chronic fatigue, Cold, Dysentry, Emetic, Febrifuge, Haemorrhages, Indigestion, Opthalmic, Salve, Sore Eyes, Sore throat, Tonic, Treating fever
Part of Plant Used
Stem
Inner Bark, Leaves, Seeds
Other Uses
Used as Ornamental plant
Tannin, Used as a dye, Used as fuel, Used as insect repellent, Used for woodware
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Edging, Mixed Border, Rock Garden / Wall
Feature Plant, Shade Trees
Botanical Name
HELICTOTRICHON sempervirens
QUERCUS velutina
Common Name
Blue Oat Grass
Black Oak
In Hindi
ब्लू जई घास
Black Oak Tree
In German
Blau Ährengras
Schwarz Oak Tree
In French
Bleu Oat Grass
Noir Oak Tree
In Spanish
Azul hierba de avena
Negro del árbol de roble
In Greek
Μπλε βρώμης Grass
Black Oak Tree
In Portuguese
Azul Aveia
Carvalho Preto
In Polish
Niebieski Owies trawa
Czarny Dąb
In Latin
Blue Oat Grass
Niger quercum ligno
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Liliopsida
Magnoliopsida
Order
Poales
Fagales
Family
Poaceae
Fagaceae
Genus
Helictotrichon
Quercus
Clade
Angiosperms, Commelinids, Monocots
Angiosperms, Eudicots, Rosids
Tribe
Aveneae
Cherokee
Subfamily
Pooideae
-
Number of Species
70600
1
27800
👆🏻