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