Life Span
Perennial
Annual and Perennial
Type
Tree
Flowering Plants, Shrubs
Origin
North America, United States, Northwestern United States, Alaska, California, Canada
Eastern Asia
Types
-
Bigleaf hydrangea, Hortensia, Smooth hydrangea, Oakleaf hydrangea, Annabelle
Number of Varieties
30100
0
40000
👆🏻
Habitat
Lowland evergreen rainforest
Fields, gardens, meadows, rocky outcrops, waste ground, yards
USDA Hardiness Zone
4-7-9999
0
99
👆🏻
AHS Heat Zone
7-1
8 - 1
Sunset Zone
3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17
21,22
Habit
Pyramidal
Clump-Forming
Plant Size
Minimum Height
1,370.00 cm25.00 cm
0
3900
👆🏻
Minimum Width
610.00 cm25.40 cm
0
6350
👆🏻
Plant Color
Flower Color
Yellow, Red, Coral
Blue, White
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown
-
Leaf Color in Spring
Green, Dark Green
Green, Gray Green
Leaf Color in Summer
Dark Green
Green, Gray Green
Leaf Color in Fall
Dark Green
Green, Gray Green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Ovate
Lanceolate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Summer
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Growth Rate
Fast
Fast
Type of Soil
Loam, Sand
Loam
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Average
Well drained
Bloom Time
Early Spring
Early Spring, Spring, Late Spring, Early Summer, Summer, Late Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Maritime exposure, Salt water
-
Where to Plant?
Ground
Ground
How to Plant?
Layering, Seedlings
Divison, Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs
Do Not over Water
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
Loam, Sand
Loam
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
Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer, Nitrogen
All-Purpose Liquid Fertilizer
Pests and Diseases
-
Red blotch
Plant Tolerance
Maritime exposure, Salt water
Drought
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
Medium
Foliage Sheen
Glossy
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Insects
Bees, Flies
Allergy
-
Chest tightness, Diarrhea, Dizziness, Nausea, Vomiting
Uses
Aesthetic Uses
-
Beautification, Cottage Garden, Ground Cover, Showy Purposes
Beauty Benefits
Skin Problems
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Prevent Soil Erosion, Shadow Tree
Air purification
Plant Benefits
Medicinal Uses
Anodyne, Appetizer, Astringent
Fever, Kidney problems, Urinary tract problems
Part of Plant Used
Flowers, Inner Bark, Sap
Flowers, Root
Other Uses
Used as a dye, used for making charcoal, Used for making informal hedge
Culinary use, Used as Ornamental plant
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Screening / Wind Break, Shade Trees
Bedding Plant, Cottage garden, Edible, Hanging Basket, Wildflower
Botanical Name
ALNUS rubra
Myosotis arvensis
Common Name
Oregon Alder, Red Alder
Forget-Me-Not
In Hindi
red alder
Forget-Me-Not
In German
rot-Erle
Forget-Me-Not
In French
aulne rouge
Forget-Me-Not
In Spanish
aliso rojo
Arce japonés
In Greek
κόκκινη σκλήθρα
Forget-Me-Not
In Portuguese
amieiro vermelho
Forget-Me-Not
In Polish
czerwony olcha
Forget-Me-Not
In Latin
red alnus
Forget-Me-Not
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Lamiales
Family
Betulaceae
Boraginaceae
Genus
Alnus
Myosotis
Clade
Angiosperms, Eudicots, Rosids
-
Tribe
-
-
Subfamily
-
-
Number of Species
35200
1
27800
👆🏻