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Black Locust
Black Locust

Red Alder
Red Alder



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Black Locust
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Red Alder

Compare Black Locust and Red Alder

What is

Life Span

Perennial
Perennial

Type

Tree
Tree

Origin

-
North America, United States, Northwestern United States, Alaska, California, Canada

Types

Honey Locust
-

Number of Varieties

1030
0 40000
👆🏻

Habitat

Woodland Garden Canopy
Lowland evergreen rainforest

USDA Hardiness Zone

5-84-7
0 99
👆🏻

AHS Heat Zone

9-3
7-1

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
3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17

Habit

Upright/Erect
Pyramidal

Information

Plant Size

Minimum Height

1,524.00 cm1,370.00 cm
0 3900
👆🏻

Minimum Width

1,066.80 cm610.00 cm
0 6350
👆🏻

Plant Color

Flower Color

Rose, Violet
Yellow, Red, Coral

Flower Color Modifier

Bicolor
Bicolor

Fruit Color

Purple, Brown
Brown

Leaf Color in Spring

Red, Crimson, Bronze
Green, Dark Green

Leaf Color in Summer

Green, Blue Green
Dark Green

Leaf Color in Fall

Yellow green
Dark Green

Leaf Color in Winter

-
-

Shape

Leaf Shape

Pinnate
Ovate

Thorns

Season

Plant Season

Spring, Summer, Fall, Winter
Spring, Summer, Fall

Growing Conditions

Sunlight

Full Sun
Full Sun, Partial Sun, Partial shade

Growth Rate

Fast
Fast

Type of Soil

Clay, Loam, Sand
Loam, Sand

The pH of Soil

Acidic, Neutral, Alkaline
Acidic, Neutral, Alkaline

Soil Drainage

Average
Average

Bloom Time

Spring, Late Spring
Early Spring

Repeat Bloomer

Tolerances

Pollution, Drought, Salt, Soil Compaction
Maritime exposure, Salt water

Care

Where to Plant?

Ground
Ground

How to Plant?

Seedlings
Layering, Seedlings

Plant Maintenance

Medium
Medium

Watering Plants

Watering Requirements

Average Water Needs, Needs a lot of water initially, occasional watering once established
Average Water Needs

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, Alkaline

Soil Type

Clay, Loam, Sand
Loam, Sand

Soil Drainage Capacity

Average
Average

Sun Exposure

Full Sun
Full Sun, Partial Sun, Partial shade

Pruning

Cut limbs, Prune in winter, Prune up lowest branches, Remove branches, Remove damaged leaves, Remove dead branches, Remove dead leaves
Remove damaged leaves, Remove dead branches, Remove dead leaves

Fertilizers

All-Purpose Liquid Fertilizer, Nitrogen
All-Purpose Liquid Fertilizer, Nitrogen

Pests and Diseases

Red blotch
-

Plant Tolerance

Drought, Pollution, Salt, Soil Compaction
Maritime exposure, Salt water

Facts

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

Medium
Medium

Foliage Sheen

Matte
Glossy

Evergreen

Invasive

Self-Sowing

Attracts

Birds, Butterflies
Insects

Allergy

Abdominal pain, Depression, Diarrhea, Digestive Problems, gastro-intestinal problems, Kidney Disease, Liver disease, Nausea, Vomiting, weakness
-

Benefits

Uses

Aesthetic Uses

Showy Purposes
-

Beauty Benefits

Good for skin
Skin Problems

Edible Uses

Environmental Uses

Air purification, Shadow Tree, soil stabilisation
Air purification, Prevent Soil Erosion, Shadow Tree

Plant Benefits

Medicinal Uses

Antispasmodic, Antivinous, Cancer, Cholagogue, Diuretic, Emetic, Emmoiliant, Eye Problems, Febrifuge, Laxative, Purgative, Tonic
Anodyne, Appetizer, Astringent

Part of Plant Used

Flowers, Seeds, Wood
Flowers, Inner Bark, Sap

Other Uses

Fibre, For making oil, Used as a dye, Used as essential oil, Used as fuel, Used for woodware
Used as a dye, used for making charcoal, Used for making informal hedge

Used As Indoor Plant

Used As Outdoor Plant

Garden Design

Feature Plant, Shade Trees, Street Trees
Screening / Wind Break, Shade Trees

Scientific Name

Botanical Name

ROBINIA 'Purple Robe'
ALNUS rubra

Common Name

Hybrid Black Locust, Purple Robe Locust
Oregon Alder, Red Alder

In Hindi

Black Locust Tree
red alder

In German

Schwarz Locust Tree
rot-Erle

In French

Noir Arbre Locust
aulne rouge

In Spanish

Negro del árbol de la langosta
aliso rojo

In Greek

Μαύρο Locust Tree
κόκκινη σκλήθρα

In Portuguese

Árvore Locust Preto
amieiro vermelho

In Polish

Robinii akacjowej Drzewo
czerwony olcha

In Latin

Locusta arbor Niger
red alnus

Classification

Kingdom

Plantae
Plantae

Phylum

Magnoliophyta
Magnoliophyta

Class

Magnoliopsida
Magnoliopsida

Order

Fabales
Fagales

Family

Fabaceae
Betulaceae

Genus

Robinia
Alnus

Clade

Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids

Tribe

Robinieae
-

Subfamily

Faboideae
-

Number of Species

2535
1 27800
👆🏻

Difference Between Black Locust and Red Alder

If you are confused whether Black Locust or Red Alder are same, here are some features about those plants to help you choose better. Many people think that these two plants have the same characteristics, but one can see Black Locust and Red Alder Information and learn more about it. Fertilizers required for proper growth of Black Locust are All-Purpose Liquid Fertilizer and Nitrogen, whereas for Red Alder fertilizers required are All-Purpose Liquid Fertilizer and Nitrogen. Hence, one should know the basic difference between Black Locust and Red Alder if you are planning to have them in your garden to enhance its beauty.

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Importance of Black Locust and Red Alder

Want to have the most appropriate plant for your garden? You might want to know the importance of Black Locust and Red Alder. Basically, these two plants vary in many aspects. Compare Black Locust and Red Alder as they differ in many characteristics such as their life, care, benefits, facts, etc. Every gardener must at least have the slightest clue about the plants he wants to plant in his garden. Compare their benefits, which differ in many ways like facts and uses. The medicinal use of Black Locust is Antispasmodic, Antivinous, Cancer, Cholagogue, Diuretic, Emetic, Emmoiliant, Eye Problems, Febrifuge, Laxative, Purgative and Tonic whereas of Red Alder is Anodyne, Appetizer and Astringent. Black Locust has beauty benefits as follows: Good for skin while Red Alder has beauty benefits as follows: Good for skin.

Compare Facts of Black Locust vs Red Alder

How to choose the best garden plant for your garden depending upon its facts? Here garden plant comparison will help you to solve this query. Compare the facts of Black Locust vs Red Alder and know which one to choose. As garden plants have benefits and other uses, allergy is also a major drawback of plants for some people. Allergic reactions of Black Locust are Abdominal pain, Depression, Diarrhea, Digestive Problems, gastro-intestinal problems, Kidney Disease, Liver disease, Nausea, Vomiting and weakness whereas of Red Alder have respectively. Having a fruit bearing plant in your garden can be a plus point of your garden. Black Locust has no showy fruits and Red Alder has showy fruits. Also Black Locust is flowering and Red Alder is not flowering . You can compare Black Locust and Red Alder facts and facts of other plants too.