Life Span
Perennial
Perennial
Type
Flowering Plants
Herbaceous Perennial
Origin
North-Central United States, Central United States, Western United States, Texas
Europe, Eastern Europe, Northern Europe, Southern Europe, Western Europe, Russia, Siberia, Mediterranean, Iraq, Iran, Western Asia
Types
Blue Toadflax, Old-Field Toadflax
-
Number of Varieties
304
0
40000
👆🏻
Habitat
Cultivated Beds
Temperate Regions, Wet lands
USDA Hardiness Zone
3-94-8
0
99
👆🏻
AHS Heat Zone
9-1
8-3
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 10
A2, A3, 1a, 1b, 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
Habit
Upright/Erect
Clump-Forming
Plant Size
Minimum Height
61.00 cm90.00 cm
0
3900
👆🏻
Minimum Width
25.40 cm1,150.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Pink, Light Blue, Lavender
Light Yellow, Chocolate
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Brown
Leaf Color in Spring
Light Green, Blue Green, Gray Green
Green, Gray Green
Leaf Color in Summer
Blue Green, Gray Green
Gray Green, Dark Green
Leaf Color in Fall
Blue Green, Gray Green
Gray Green, Dark Green, Yellow green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Oval to egg shaped
Sword-like
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer
Spring, Summer
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Growth Rate
Fast
Fast
Type of Soil
Clay, Loam
Clay, Loam, Sand
The pH of Soil
Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Well drained
Poorly Drained
Bloom Time
Late Spring, Early Summer, Summer
-
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Drought
Where to Plant?
Ground
Ground
How to Plant?
Cuttings, Divison, Seedlings
From Rhizomes, Seedlings, Water-dispersed Seed
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs, Do Not over Water
Average Water Needs
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral, Alkaline
Acidic, Neutral
Soil Type
Clay, Loam
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Poorly Drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
use all-purpose fertilizers
All-Purpose Liquid Fertilizer
Pests and Diseases
Foliar disease, Root rot, Spider mites
Bacteria, fungus, Viruses
Plant Tolerance
Drought
Drought
Flowers
✔
✘
✔
✘
Flower Petal Number
Single
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
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Bumblebees
Butterflies, Hummingbirds
Allergy
Depression, High blood cholestrol, Pain
allergic reaction, Skin irritation
Uses
Aesthetic Uses
Showy Purposes
Beautification, Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
Analgesic, Febrifuge, Stomachic
cathartic, Diarrhea
Part of Plant Used
Leaves, Root
Flowers, Rhizomes, Whole plant
Other Uses
-
Used in herbal medicines
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Rock Garden / Wall, Wildflower
Bog Garden, Container, Water Gardens
Botanical Name
PENSTEMON grandiflorus
IRIS pseudacorus
Common Name
Large Beardtongue, Shell-leaf Penstemon, Wild Snapdragon
Pale Yellow Iris, Yellow Flag, Yellow Iris
In Hindi
Wild Snapdragon
Pale Yellow Iris
In German
Wilde Snapdragon
Sumpf-Schwertlilie
In French
Snapdragon sauvage
Iris pseudacorus
In Spanish
Salvaje Snapdragon
Iris pseudacorus
In Greek
άγρια Snapdragon
Pale Yellow Iris
In Portuguese
Selvagem Snapdragon
Pale Yellow Iris
In Polish
Dziki Snapdragon
Kosaciec żółty
In Latin
Phlox Ferae
Pale Yellow Iris
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Liliopsida
Order
Scrophulariales
Asparagales
Family
Scrophulariaceae
Iridaceae
Genus
Penstemon
Iris
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Monocots
Tribe
-
Irideae
Subfamily
Scrophularioideae
Iridoideae
Number of Species
40260
1
27800
👆🏻