Life Span
Perennial
Perennial
Type
Tree
Flowering Plants
Origin
North America, United States, Northwestern United States, Alaska, California, Canada
North-Central United States, Central United States, Western United States, Texas
Types
-
Blue Toadflax, Old-Field Toadflax
Number of Varieties
3030
0
40000
👆🏻
Habitat
Lowland evergreen rainforest
Cultivated Beds
USDA Hardiness Zone
4-73-9
0
99
👆🏻
AHS Heat Zone
7-1
9-1
Sunset Zone
3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17
1a, 1b, 2a, 2b, 3a, 3b, 10
Habit
Pyramidal
Upright/Erect
Plant Size
Minimum Height
1,370.00 cm61.00 cm
0
3900
👆🏻
Minimum Width
610.00 cm25.40 cm
0
6350
👆🏻
Plant Color
Flower Color
Yellow, Red, Coral
Pink, Light Blue, Lavender
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown
-
Leaf Color in Spring
Green, Dark Green
Light Green, Blue Green, Gray Green
Leaf Color in Summer
Dark Green
Blue Green, Gray Green
Leaf Color in Fall
Dark Green
Blue Green, Gray Green
Leaf Color in Winter
-
-
Shape
Leaf Shape
Ovate
Oval to egg shaped
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
Clay, Loam
The pH of Soil
Acidic, Neutral, Alkaline
Neutral, Alkaline
Soil Drainage
Average
Well drained
Bloom Time
Early Spring
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Maritime exposure, Salt water
Drought
Where to Plant?
Ground
Ground
How to Plant?
Layering, Seedlings
Cuttings, Divison, Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs
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
Neutral, Alkaline
Soil Type
Loam, Sand
Clay, 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
use all-purpose fertilizers
Pests and Diseases
-
Foliar disease, Root rot, Spider mites
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
Bumblebees
Allergy
-
Depression, High blood cholestrol, Pain
Uses
Aesthetic Uses
-
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
Analgesic, Febrifuge, Stomachic
Part of Plant Used
Flowers, Inner Bark, Sap
Leaves, Root
Other Uses
Used as a dye, used for making charcoal, Used for making informal hedge
-
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Screening / Wind Break, Shade Trees
Rock Garden / Wall, Wildflower
Botanical Name
ALNUS rubra
PENSTEMON grandiflorus
Common Name
Oregon Alder, Red Alder
Large Beardtongue, Shell-leaf Penstemon, Wild Snapdragon
In Hindi
red alder
Wild Snapdragon
In German
rot-Erle
Wilde Snapdragon
In French
aulne rouge
Snapdragon sauvage
In Spanish
aliso rojo
Salvaje Snapdragon
In Greek
κόκκινη σκλήθρα
άγρια Snapdragon
In Portuguese
amieiro vermelho
Selvagem Snapdragon
In Polish
czerwony olcha
Dziki Snapdragon
In Latin
red alnus
Phlox Ferae
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Scrophulariales
Family
Betulaceae
Scrophulariaceae
Genus
Alnus
Penstemon
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Tribe
-
-
Subfamily
-
Scrophularioideae
Number of Species
3540
1
27800
👆🏻