Life Span
Perennial
Perennial
Type
Tree
Broadleaf Evergreen
Origin
North America, United States, Northwestern United States, Alaska, California, Canada
-
Types
-
Rhododendron aberconwayi, Rhododendron bulu, Rhododendron kanehirae
Habitat
Lowland evergreen rainforest
moist forests
USDA Hardiness Zone
4-7
5-8
Sunset Zone
3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17
21,22
Habit
Pyramidal
Spreading
Flower Color
Yellow, Red, Coral
Red
Flower Color Modifier
Bicolor
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
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall, Winter
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Type of Soil
Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Acidic
Soil Drainage
Average
Well drained
Bloom Time
Early Spring
Late Spring
Tolerances
Maritime exposure, Salt water
-
Where to Plant?
Ground
Ground
How to Plant?
Layering, Seedlings
From Rhizomes, Seedlings, Stem Planting
Plant Maintenance
Medium
Medium
Watering Requirements
Average Water Needs
Do Not over Water, Keep ground moist
In Summer
Lots of watering
Consistently
In Spring
Moderate
Moderate
In Winter
Average Water
Ample Water
Soil pH
Acidic, Neutral, Alkaline
Acidic
Soil Type
Loam, Sand
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
-
Flowers
Insignificant
Showy
Flower Petal Number
-
Single
Foliage Texture
Medium
Coarse
Foliage Sheen
Glossy
Matte
Aesthetic Uses
-
Showy Purposes
Beauty Benefits
Skin Problems
Making cosmetics
Environmental Uses
Air purification, Prevent Soil Erosion, Shadow Tree
Air purification
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
No
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Screening / Wind Break, Shade Trees
Feature Plant, Hedges, Mixed Border, Screening, Wind Break, Topiary, Bonsai, Espalier
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
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Family
Betulaceae
Ericaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Importance of Red Alder and Rhododendron
Want to have the most appropriate plant for your garden? You might want to know the importance of Red Alder and Rhododendron. Basically, these two plants vary in many aspects. Compare Red Alder and Rhododendron 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 Red Alder is Anodyne, Appetizer and Astringent whereas of Rhododendron is Burns, Chronic fatigue, Cold, Diarrhea, Dysentry, Headache and Rheumatism. Red Alder has beauty benefits as follows: Skin Problems while Rhododendron has beauty benefits as follows: Skin Problems.
Compare Facts of Red Alder vs Rhododendron
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 Red Alder vs Rhododendron 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 Red Alder are whereas of Rhododendron have Asthma respectively. Having a fruit bearing plant in your garden can be a plus point of your garden. Red Alder has showy fruits and Rhododendron has no showy fruits. Also Red Alder is not flowering and Rhododendron is not flowering . You can compare Red Alder and Rhododendron facts and facts of other plants too.