Red Alder

Rhododendron

About Red Alder and Rhododendron

Red Alder

Rhododendron

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What is

Life Span

Perennial

Type

Tree

Broadleaf Evergreen

Origin

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

Types

Rhododendron aberconwayi, Rhododendron bulu, Rhododendron kanehirae

Number of Varieties

30700

0 40000

👆🏻

Habitat

Lowland evergreen rainforest

moist forests

USDA Hardiness Zone

4-75-8

0 99

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AHS Heat Zone

7-1

Sunset Zone

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

21,22

Habit

Pyramidal

Spreading

Information

Plant Size

Minimum Height

1,370.00 cm150.00 cm

0 3900

👆🏻

Minimum Width

610.00 cm150.00 cm

0 6350

👆🏻

Plant Color

Flower Color

Yellow, Red, Coral

Red

Flower Color Modifier

Bicolor

Fruit Color

Brown

Green, Tan

Leaf Color in Spring

Green, Dark Green

Green

Leaf Color in Summer

Dark Green

Green

Leaf Color in Fall

Dark Green

Green

Leaf Color in Winter

Green

Shape

Leaf Shape

Ovate

Thorns

✔ ✘

Season

Plant Season

Spring, Summer, Fall

Spring, Summer, Fall, Winter

Growing Conditions

Sunlight

Full Sun, Partial Sun, Partial shade

Full Sun, Partial Sun

Growth Rate

Fast

Medium

Type of Soil

Loam, Sand

The pH of Soil

Acidic, Neutral, Alkaline

Acidic

Soil Drainage

Average

Well drained

Bloom Time

Early Spring

Late Spring

Repeat Bloomer

✔ ✘

Tolerances

Maritime exposure, Salt water

Care

Where to Plant?

Ground

How to Plant?

Layering, Seedlings

From Rhizomes, Seedlings, Stem Planting

Plant Maintenance

Medium

Watering Plants

Watering Requirements

Average Water Needs

Do Not over Water, Keep ground moist

In Summer

Lots of watering

Consistently

In Spring

Moderate

In Winter

Average Water

Ample Water

Soil

Soil pH

Acidic, Neutral, Alkaline

Acidic

Soil Type

Loam, Sand

Soil Drainage Capacity

Average

Well drained

Sun Exposure

Full Sun, Partial Sun, Partial shade

Full Sun, Partial Sun

Pruning

Remove damaged leaves, Remove dead branches, Remove dead leaves

Prune after flowering, Remove dead or diseased plant parts, Remove deadheads, Remove short twigs

Fertilizers

All-Purpose Liquid Fertilizer, Nitrogen

Apply 12-10-18 NPK, General garden fertilizer

Pests and Diseases

Azalea leaf gall, Bud blast, Galls, Honey fungus, Leaf Hoppers, Leaf spot, Petal blight, Phytophthora, Powdery mildew, Rust, Silver leaf

Plant Tolerance

Maritime exposure, Salt water

Facts

Flowers

Insignificant

Showy

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

Coarse

Foliage Sheen

Glossy

Matte

Evergreen

✔ ✘

Invasive

✔ ✘

Self-Sowing

✔ ✘

Attracts

Insects

Allergy

Asthma

Benefits

Uses

Aesthetic Uses

Showy Purposes

Beauty Benefits

Skin Problems

Making cosmetics

Edible Uses

✔ ✘

Environmental Uses

Air purification, Prevent Soil Erosion, Shadow Tree

Air purification

Plant Benefits

Medicinal Uses

Anodyne, Appetizer, Astringent

Burns, Chronic fatigue, Cold, Diarrhea, Dysentry, Headache, Rheumatism

Part of Plant Used

Flowers, Inner Bark, Sap

Whole plant

Other Uses

Used as a dye, used for making charcoal, Used for making informal hedge

Cosmetics, Employed in herbal medicine, Oil is used for aromatherapy, Oil is used in perfume, soaps, creams, etc., Sometimes used for making wine

Used As Indoor Plant

✔ ✘

Used As Outdoor Plant

✔ ✘

Garden Design

Screening / Wind Break, Shade Trees

Feature Plant, Hedges, Mixed Border, Screening, Wind Break, Topiary, Bonsai, Espalier

Scientific Name

Botanical Name

ALNUS rubra

RHODODENDRON

Common Name

Oregon Alder, Red Alder

Rhododendron

In Hindi

red alder

rhododendron

In German

rot-Erle

Rhododendron

In French

aulne rouge

rhododendron

In Spanish

aliso rojo

rododendro

In Greek

κόκκινη σκλήθρα

ροδοδάφνη

In Portuguese

amieiro vermelho

rododendro

In Polish

czerwony olcha

rododendron

In Latin

red alnus

Rhododendron

Classification

Kingdom

Plantae

Phylum

Magnoliophyta

Class

Magnoliopsida

Order

Fagales

Ericales

Family

Betulaceae

Ericaceae

Genus

Alnus

Rhododendron

Clade

Angiosperms, Eudicots, Rosids

Angiosperms, Asterids, Eudicots

Tribe

Rhodoreae

Subfamily

Ericoideae

Number of Species

351024

1 27800

👆🏻

Properties of Red Alder and Rhododendron

Wondering what are the properties of Red Alder and Rhododendron? We provide you with everything About Red Alder and Rhododendron. Red Alder doesn't have thorns and Rhododendron doesn't have thorns. Also Red Alder does not have fragrant flowers. Red Alder has allergic reactions like and Rhododendron has allergic reactions like . Compare all the properties and characteristics of these two plants. Find out which of these plant can be used as indoor plant. If you are interested to decorate your house and garden, find out aesthetic uses, compare them and select the plant which will beautify your surrounding. Along with beautification, try comparing medicinal and edible uses of Red Alder and Rhododendron and you can choose the plant having best and most benefits.

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Season and Care of Red Alder and Rhododendron

Season and care of Red Alder and Rhododendron is important to know. While considering everything about Red Alder and Rhododendron Care, growing season is an essential factor. Red Alder season is Spring, Summer and Fall and Rhododendron season is Spring, Summer and Fall. The type of soil for Red Alder is Loam, Sand and for Rhododendron is Loam, Sand while the PH of soil for Red Alder is Acidic, Neutral, Alkaline and for Rhododendron is Acidic.

Red Alder and Rhododendron Physical Information

Red Alder and Rhododendron physical information is very important for comparison. Red Alder height is 1,370.00 cm and width 610.00 cm whereas Rhododendron height is 150.00 cm and width 150.00 cm. The color specification of Red Alder and Rhododendron are as follows:

Red Alder flower color: Yellow, Red and Coral
Red Alder leaf color: Green and Dark Green
Rhododendron flower color: Red
Rhododendron leaf color: Green

Care of Red Alder and Rhododendron

Care of Red Alder and Rhododendron include pruning, fertilizers, watering etc. Red Alder pruning is done Remove damaged leaves, Remove dead branches and Remove dead leaves and Rhododendron pruning is done Prune after flowering, Remove dead or diseased plant parts, Remove deadheads and Remove short twigs. In summer Red Alder needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Rhododendron needs Consistently and in winter, it needs Ample Water.