WARREN APPLETON | PERSONAL WEBSITE
Home | Plants | Birds | Species at Risk

Spiraea douglasii

Hardhack
Spiraea douglasii
Photo 1. General image of Spiraea douglasii

Description

Spiraea douglasii, commonly known as Hardhack, is a provincially yellow listed shrub in BC. Federally it is not listed. It is part of the rose family. They are commonly found in riparian, stream, bog, fen, marsh, swamp, vernal pools, seeps, mixed forest or deciduous forest habitats.

Spiraea douglasii is a shrub that is 0.5-2.5 m tall. The leaves are thin. The leaf shape is ovate (oval, egg-shaped, with a tapering point and the widest portion near the petiole), oblong (having an elongated form with slightly parallel sides, roughly rectangular) or mucronate (ending abruptly in a small sharp point as a continuation of the midrib). Their surface is smooth or hairy. Their edges are dentate. Leaves are arranged alternate. Leaves are 3-10 cm long. The stems form is creeping and erect. It has a smooth surface. The flowers have 5 pink pedals or sepals. Flowers are about 2 mm long. Fruit are approximately smooth except sometimes a few long hairs along the suture The fruit are smooth. It has a rhizome root structure.

Their prefered habitat is riparian, stream, bog, fen, marsh, swamp, vernal pools, seeps, mixed forest or deciduous forest. Sun exposure is typically full sun, full sun, shade or shade. They typically grow in loamy, gravel or organic soil. Moisture requirements are freshwater seasonal, freshwater seasonal, saturated soil, saturated soil, saturated soil, moist soil, freshwater permanent, freshwater obligate or moist soil. And the pH requirements are neutral, slightly acidic, moderately acidic, or very acidic. It can be found from 0 m to 500 m in elevation. It can be found in British Columbia, Canada. Spiraea douglasii is found in the coastal-western-hemlock biogeoclimatic zone(s).

ClassificationProtection StatusLocation
Type:
Domain:
Kingdom:Plant
Phylum/Division:
Class/Clade:
Order/Series:Rosales
Family:Rosaceaerose
Genus:Spiraea
Species:Spiraea douglasii
Population:
British Columbia Red Listed Blue Listed Yellow Listed Exotic Listed Invasive Listed Noxious Listed
Species at Risk Act Endangered Least Concern Not Listed
World Status Extinct EW CR EN VU NT Least Concern
Municipalities
BC Biogeoclimatic Subzones Site Series
BC Biogeoclimatic Subzones
BC Biogeoclimatic Zones
BC Forest District
Provinces AB BC NB NL NT NS NU ON PE QC SK
Countries
Continents NA SA EU AS AF AU AN
Identification
Line drawing of Spiraea douglasii

General

Height
Life Cycle
Habit Tufted Creeping Stolon

Leafs

Length
Width
Surface Flat Keeled Smooth Ridged Hairy Pleated Wharted Groved Rough
Leaf Tip
Entire Leaf Shape
Leaf Base
Leaf Attachment
Edge
Arrangement
Thinkness Thin Thick Fleshy

Inflorescence

Length
Width
# (Pedals or Sepal) 0 1 2 3 4 5 6 7 8 many pea irregular
Colour White Pink Purple Blue Green Yellow Orange Red Brown Black

Fruit

Length
Width
Shape Egg Shaped Hairy Silky Smooth Winged
Colour White Pink Purple Blue Green Yellow Orange Red Brown Black

Seeds

Length
Width
Colour White Pink Purple Blue Green Yellow Orange Red Brown Black

Stem

Texture Smooth Ridges Furrows Fissures Plates Peeling Scales Flaking Horizontal Lines Shredding Corky Blocky Hairy Spiny Thorny
Form Creeping Twinning Stiff Soft Woody Erect Ascending
Colour White Pink Purple Blue Green Yellow Orange Red Brown Black

Roots

Type Fibrous Tap Rhizome Fusiform Hairy
Habitat Requirements
Type
Marine Beach Sand Dune Bluff Riparian Stream Bog Fen Marsh Swamp Meadow
Vernal Pools Seasonal Seeps Mountains Mixed Forest Deciduous Forest Conifer Forest Gary Oak Grassland Desert Sagebrush Steppe
Disturbed Urban Rural Old Growth Undisturbed
Sunlight
Full Sun Mix Sun Shade Shade
Moisture
Marine Subtidal Marine Intertidal Brackish Intertidal Freshwater Obligate Freshwater Permanent Freshwater Seasonal Saturated Soil Moist Soil Dry Soil
pH
4 5 6 7 8
Elevation
Sea Level 500 m 1000 m 1500 m 2000 m
Soil
Organic Loam Sand Gravel Rocky

Life History

Age to Bloom12345678910>10
Max Age
BloomJanFebMarAprMayJunJulAugSepOctNovDec
FruitJanFebMarAprMayJunJulAugSepOctNovDec
SeedJanFebMarAprMayJunJulAugSepOctNovDec

Warren Appleton

Home

Social Media

LinkedIn

Twitter

© Warren Appleton 2019. All rights reserved.