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Photo:
Kathy Ketchum
Streambank Globemallow
Wild Hollyhock
Latin Name:
Iliamna rivularis
Tall perennial shrub whose seeds germinate after a wildfire
Taxon ID#
48
MAINTENANCE
Maintenance Level:
Low
Min. USDA Hardiness Zone:
3
Sun Preference:
Partial Sun
Water Preference:
M
Soil Preference:
Moist sandy/loam
Fertilizer Needs:
Recommended Mulch:
Family:
Malvaceae
Origins:
Plant Type:
Herbaceous Plant, Perennial
Native to western North America
Oregon native:
yes
Western state native:
yes
PLANT DESCRIPTION
Foliage Color:
Green
Foliage Description:
Leaves maple-like with star shaped hairs
Fragrant:
no
Predominant flower color:
Pink
Flower Description:
Five egg-shaped, pinkish petaled flowers in racemes.
Fall color:
no
Fall Color Description:
Winter Foliage:
Deciduous
Winter Interest:
no
Winter Interest Description:
Mature height:
6'
Mature spread:
2-3'
Growth rate:
Medium
LANDSCAPE APPLICATION
Deer Resistant:
no
Fire Resistant:
yes
Attracts Pollinators:
yes
Attracts Butterflies:
yes
Native Habitat:
Streambank species
Attracts Birds:
yes
Cut/Dried Flowers:
no

Photo:
Pat Kolling
Used by Wildlife:
yes
Hedge/Screen:
no
Swales:
yes
Wildlife Use:
Grazed by deer and elk
Border:
no
Erosion Control:
no
Windbreak:
no
Cover Structures:
no
Ground Cover:
no
Provides Shade:
no
Rock Garden:
yes
Adds Texture/Movement:
no
First Bloom:
Jun
Last Bloom:
Aug
Ornamental Accent:
no
Garden Observations:
Suffered from chronic lack of water in 2021; many reseedlings
SEASONAL CARE
Spring Care:
Pick the healthiest of reseedlings to nuture
Summer Care:
Freely reseeds itself. Clip back after flowering. https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1142&context=usupress_pubs
Fall Care:
Winter Care:
Long Term Care:
Watch to be sure plant gets enough water during hot periods
Insect Pests:
Wildlife Pests:
Diseases:
Environmental Problems:
Landscape Problems:
Care Comments:
RESOURCES
OSU Landscape Profile:
USDA Plants:
Calscape Database:
LBJ Native Plant Database:
Missouri Botanical Garden Database:
Monrovia Profile:
Alternate Source 1:
Alternate Source 2:
Source Comment:

George & Vickie Minor
Whistle Stop Farm & Flowers
Empire Stone
Instant Landscape
McPheeter's Turf
High Desert Farms Nursery Sales
Thank you!
Join an OSU Master Gardener managed community garden this summer!
Put your name in the lottery to get a plot at either Hollinshead's or Discovery Park's community garden.
More information for: Discovery Park Garden


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