Life Span
Perennial
  
Perennial
  
Type
Grass
  
Tree
  
Origin
World/Pandemic, North America, Europe, Russia/Siberia, Asia
  
Hybrid origin
  
Types
Blue fescue, Large Blue fescue
  
Honey Locust
  
Habitat
Moist Soils, Rocky areas, Well Drained
  
Woodland Garden Canopy
  
USDA Hardiness Zone
4-8
  
5-8
  
AHS Heat Zone
8 - 1
  
9-3
  
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
  
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
  
Habit
Clump-Forming
  
Upright/Erect
  
Plant Size
  
  
Minimum Height
1,524.00 cm
  
27
Minimum Width
1,066.80 cm
  
20
Plant Color
  
  
Flower Color
Not Available
  
Rose, Violet
  
Flower Color Modifier
Bicolor
  
Bicolor
  
Fruit Color
Not Available
  
Purple, Brown
  
Leaf Color in Spring
Blue Green, Gray
  
Red, Crimson, Bronze
  
Leaf Color in Summer
Light Green
  
Green, Blue Green
  
Leaf Color in Fall
Blue Green, Gray
  
Yellow green
  
Leaf Color in Winter
Blue Green, Tan, Gray
  
Not Available
  
Shape
  
  
Leaf Shape
Grass like
  
Pinnate
  
Thorns
No
  
Yes
  
Plant Season
Spring, Summer, Fall, Winter
  
Spring, Summer, Fall, Winter
  
Growing Conditions
  
  
Sunlight
Full Sun, Partial Sun
  
Full Sun
  
Growth Rate
Medium
  
Fast
  
Type of Soil
Loam, Sand
  
Clay, Loam, Sand
  
The pH of Soil
Acidic, Neutral
  
Acidic, Neutral, Alkaline
  
Soil Drainage
Well drained
  
Average
  
Bloom Time
Early Summer, Summer
  
Spring, Late Spring
  
Repeat Bloomer
No
  
No
  
Tolerances
Drought
  
Pollution, Drought, Salt, Soil Compaction
  
Where to Plant?
Container, Ground
  
Ground
  
How to Plant?
Seedlings
  
Seedlings
  
Plant Maintenance
Medium
  
Medium
  
Watering Plants
  
  
Watering Requirements
Requires regular watering
  
Average Water Needs, Needs a lot of water initially, occasional watering once established
  
In Summer
Lots of watering
  
Lots of watering
  
In Spring
Moderate
  
Moderate
  
In Winter
Average Water
  
Average Water
  
Soil
  
  
Soil pH
Acidic, Neutral
  
Acidic, Neutral, Alkaline
  
Soil Type
Loam, Sand
  
Clay, Loam, Sand
  
Soil Drainage Capacity
Well drained
  
Average
  
Sun Exposure
Full Sun, Partial Sun
  
Full Sun
  
Pruning
Cut or pinch the stems, Remove dead leaves, Remove dead or diseased plant parts
  
Cut limbs, Prune in winter, Prune up lowest branches, Remove branches, Remove damaged leaves, Remove dead branches, Remove dead leaves
  
Fertilizers
Apply 10-10-10 amount
  
All-Purpose Liquid Fertilizer, Nitrogen
  
Pests and Diseases
Red blotch
  
Red blotch
  
Plant Tolerance
Drought
  
Drought, Pollution, Salt, Soil Compaction
  
Flowers
Insignificant
  
Yes
  
Flower Petal Number
Single
  
Single
  
Fruits
  
  
Showy Fruit
No
  
No
  
Edible Fruit
No
  
No
  
Fragrance
  
  
Fragrant Flower
No
  
Yes
  
Fragrant Fruit
No
  
No
  
Fragrant Leaf
No
  
No
  
Fragrant Bark/Stem
No
  
No
  
Showy Foliage
Yes
  
Yes
  
Showy Bark
No
  
Yes
  
Foliage Texture
Fine
  
Medium
  
Foliage Sheen
Matte
  
Matte
  
Evergreen
No
  
No
  
Invasive
No
  
Sometimes
  
Self-Sowing
Yes
  
Yes
  
Attracts
Birds, Butterflies
  
Birds, Butterflies
  
Allergy
Not Available
  
Abdominal pain, Depression, Diarrhea, Digestive Problems, gastro-intestinal problems, Kidney Disease, Liver disease, Nausea, Vomiting, weakness
  
Uses
  
  
Aesthetic Uses
Ground Cover
  
Showy Purposes
  
Beauty Benefits
Not Available
  
Good for skin
  
Edible Uses
No
  
Yes
  
Environmental Uses
Air purification, Provides ground cover
  
Air purification, Shadow Tree, soil stabilisation
  
Plant Benefits
  
  
Medicinal Uses
Not Available
  
Antispasmodic, Antivinous, Cancer, Cholagogue, Diuretic, Emetic, Emmoiliant, Eye Problems, Febrifuge, Laxative, Purgative, Tonic
  
Part of Plant Used
Flowers, Seeds
  
Flowers, Seeds, Wood
  
Other Uses
Used as Ornamental plant
  
Fibre, For making oil, Used as a dye, Used as essential oil, Used as fuel, Used for woodware
  
Used As Indoor Plant
Insignificant
  
No
  
Used As Outdoor Plant
Yes
  
Yes
  
Garden Design
Bedding Plant, Container, Feature Plant, Mixed Border, Rock Garden / Wall
  
Feature Plant, Shade Trees, Street Trees
  
Botanical Name
FESTUCA glauca 'Boulder Blue'
  
ROBINIA 'Purple Robe'
  
Common Name
Blue Fescue, Boulder Blue Fescue
  
Hybrid Black Locust, Purple Robe Locust
  
In Hindi
Boulder Blue Fescue
  
Black Locust Tree
  
In German
Boulder Blau -Schwingel
  
Schwarz Locust Tree
  
In French
Boulder bleu fétuque
  
Noir Arbre Locust
  
In Spanish
Boulder azul de la hierba festuca
  
Negro del árbol de la langosta
  
In Greek
Boulder μπλε γρασίδι φεστούκα
  
Μαύρο Locust Tree
  
In Portuguese
Boulder Blue Grass festuca
  
Árvore Locust Preto
  
In Polish
Boulder niebieskie trawy kostrzewy
  
Robinii akacjowej Drzewo
  
In Latin
Hyacintho herba, lapidem fescue
  
Locusta arbor Niger
  
Kingdom
Plantae
  
Plantae
  
Phylum
Magnoliophyta
  
Magnoliophyta
  
Class
Liliopsida
  
Magnoliopsida
  
Order
Cyperales
  
Fabales
  
Family
Poaceae
  
Fabaceae
  
Genus
Festuca
  
Robinia
  
Clade
Angiosperms, Commelinids, Monocots
  
Angiosperms, Eudicots, Rosids
  
Tribe
Poeae
  
Robinieae
  
Subfamily
Pooideae
  
Faboideae
  
Number of Species
Not Available
  
Season and Care of Boulder Blue Fescue and Black Locust
Season and care of Boulder Blue Fescue and Black Locust is important to know. While considering everything about Boulder Blue Fescue and Black Locust Care, growing season is an essential factor. Boulder Blue Fescue season is Spring, Summer, Fall and Winter and Black Locust season is Spring, Summer, Fall and Winter. The type of soil for Boulder Blue Fescue is Loam, Sand and for Black Locust is Clay, Loam, Sand while the PH of soil for Boulder Blue Fescue is Acidic, Neutral and for Black Locust is Acidic, Neutral, Alkaline.
Boulder Blue Fescue and Black Locust Physical Information
Boulder Blue Fescue and Black Locust physical information is very important for comparison. Boulder Blue Fescue height is 30.50 cm and width 25.40 cm whereas Black Locust height is 1,524.00 cm and width 1,066.80 cm. The color specification of Boulder Blue Fescue and Black Locust are as follows:
Boulder Blue Fescue flower color: Not Available
Boulder Blue Fescue leaf color: Blue Green and Gray
Black Locust flower color: Rose and Violet
- Black Locust leaf color: Red, Crimson and Bronze
Care of Boulder Blue Fescue and Black Locust
Care of Boulder Blue Fescue and Black Locust include pruning, fertilizers, watering etc. Boulder Blue Fescue pruning is done Cut or pinch the stems, Remove dead leaves and Remove dead or diseased plant parts and Black Locust pruning is done Cut limbs, Prune in winter, Prune up lowest branches, Remove branches, Remove damaged leaves, Remove dead branches and Remove dead leaves. In summer Boulder Blue Fescue needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Black Locust needs Lots of watering and in winter, it needs Average Water.