Plant Profile: Kalmia polifolia

Taxonomy: Kalmia polifolia

Names

Bog Kalmia, Bog Laurel, Pale Laurel, Swamp Laurel

  • Photo of Kalmia polifolia (Kalmia polifolias)

Phonetic Spelling:

Genus:Kalmia

Species:polifolia

Family:Ericaceae

Bog Laurel is a low-growing, mat-forming evergreen belonging to the heath family, known for its striking pink, bell-shaped blossoms. This plant thrives in both shaded areas and wet conditions. It can be propagated during the summer months using seeds or stem cuttings.

Kalmia polifolia Feature Summary

Kalmia polifolia Image Gallery

Tags

#evergreen
#pink flowers
#shade tolerant
#wet sites
#blue-green leaves
#evergreen shrub
#evergreen groundcover
#wet soils tolerant
#flood tolerant
#problem for cats
#problem for dogs
#problem for horses
#bog gardens
#heavy shade tolerant

Similar Plants

Kalmia polifolia Feature Summary

Attributes
Fruit
Woody capsule
Flowers
Showy pink bell-shaped flowers appear in clusters of 2-5 blooms May-June.
Pink
White
Poisonous to Humans
Typically not very palatable to horses unless it is the only forage available, but sheep and goats may graze readily on the plant. The toxic principle interferes with normal skeletal muscle, cardiac muscle and nerve function. Clinical effects typically occur within a few hours after ingestion, and can include acute digestive upset, excessive drooling, loss of appetite, frequent bowel movements/diarrhea, colic, depression, weakness, loss of coordination, stupor, leg paralysis, weak heart rate and recumbency for 2 or more days; at this point, improvement may be seen or the animal may become comatose and die. Watering of eyes and nose, nausea, vomiting, sweating, abdominal pain, headache, tingling of the skin, convulsions, cardiac failure
Andromedotoxin, arbutin, Grayanotoxin
Seeds
Leaves
Stems
Sap/Juice
Flowers
Fruits
Roots
Whole Plant Traits
Shrub
Ground Cover
Prostrate
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Deep shade (Less than 2 hours to no direct sunlight)
Moist
Occasionally Wet
Occasional Flooding
High Organic Matter
Landscape
Poisonous to Humans
Problem for Cats
Problem for Dogs
Problem for Horses

Kalmia polifolia Attributes

Kalmia polifolia: Country Or Region Of Origin

Sub Arctic North America

Kalmia polifolia: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Kalmia polifolia: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Kalmia polifolia Fruit

Kalmia polifolia: Fruit Description

Woody capsule

Kalmia polifolia: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Kalmia polifolia Flowers

Kalmia polifolia: Flower Description

Showy pink bell-shaped flowers appear in clusters of 2-5 blooms May-June.

Kalmia polifolia: Flower Color

filter_vintage
Pink
filter_vintage
White

Kalmia polifolia: Flower Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Kalmia polifolia: Flower Bloom Time

Winter
Spring
Summer
Fall

Kalmia polifolia: Flower Shape

Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel

Kalmia polifolia Poisonous to Humans

Kalmia polifolia: Poison Symptoms

Typically not very palatable to horses unless it is the only forage available, but sheep and goats may graze readily on the plant. The toxic principle interferes with normal skeletal muscle, cardiac muscle and nerve function. Clinical effects typically occur within a few hours after ingestion, and can include acute digestive upset, excessive drooling, loss of appetite, frequent bowel movements/diarrhea, colic, depression, weakness, loss of coordination, stupor, leg paralysis, weak heart rate and recumbency for 2 or more days; at this point, improvement may be seen or the animal may become comatose and die. Watering of eyes and nose, nausea, vomiting, sweating, abdominal pain, headache, tingling of the skin, convulsions, cardiac failure

Kalmia polifolia: Poison Toxic Principle

Andromedotoxin, arbutin, Grayanotoxin

Kalmia polifolia: Poison Severity

High
Low
Medium

Kalmia polifolia: Causes Contact Dermatitis

No
Yes

Kalmia polifolia: Poison Part

Bark
Flowers
Fruits
Leaves
Roots
Sap/Juice
Seeds
Stems

Kalmia polifolia Whole Plant Traits

Kalmia polifolia: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Kalmia polifolia: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Kalmia polifolia: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Kalmia polifolia Cultural Conditions

Kalmia polifolia: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Kalmia polifolia: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Kalmia polifolia: Available Space To Plant

12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet

Kalmia polifolia: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Kalmia polifolia Leaves

Kalmia polifolia: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Kalmia polifolia: Leaf Color

spa
Blue
spa
Green

Kalmia polifolia: Hairs Present

No
Yes

Kalmia polifolia Stem

Kalmia polifolia: Stem Is Aromatic

No
Yes

Kalmia polifolia Landscape

Kalmia polifolia: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Kalmia polifolia: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Kalmia polifolia: Problems

Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy