Sidalcea oregana
Common Name(s):
Oregon Checker Mallow
Oregon Checkerbloom
Synonym:
Sidalcea maxima
Oregon checker
Flower:
Pink
Blooms :
May
to:
Jul
Bowl shaped flowers with 5 pink petals, notched and center of fused stamens
Botanical Description
Fragrant?
NO
Family:
Malvaceae
Herbaceous Plant, Perennial
Foliage:
Green
Branches leafy with green deeply lobed sharply toothed leaves
Fall Color?
NO
Deciduous
Photo by:
Heading 6
Oregon Native?
YES
West State Native?
YES
Origins:
Native to western North America from British Columbia to CA/UT
Site Selection
Minimum USDA Hardiness Zone:
4
Water Needs:
M
Sun Needs:
Partial Sun
Deer Resistant?
YES
Firewise?
YES
Height:
0.5-5'
Spread:
6-12'
Growth Rate:
Medium
Native Habitat:
Wet meadows and marshes, shrub steppe
Soil:
Prefers sandy or loamy soils. Does not grow well in clay soils.
Care Recommendations
Maintenance Level:
Low
Fertilizer:
Does not require fertilizer
Mulch:
2-3" layer of aged wood chips, pine needles
Provide sandy or loamy soil, light top dressing of compost, remove spent flower stalks after first bloom to encourage more flower production, in late fall cut bck to basal foliage
Long Term:
Winter:
Trim away dead stalks, ensure good drainage, mulch if not done in fall, water every six weeks
Spring:
Keep soil consistently moist, apply a top dressing of compost, mulch
Summer:
Needs consistent moisture, full sun, once top has finished flowering trim to next set of side buds, monitor for pests and diseases
Fall:
Cut spent flower stalks to ground, reduce watering, mulch
General Care Comments:
Provide full sun, moist soil, good drainage, ample moisture, deadhead spent flower stalks
Common Problems
Improper moisture, encroachment from invasive vegetation
Diseases:
Rust, leaf spots
Insects:
Aphids, native weevils
Environmental Problems:
Altered hydrology, woody plant encroachment, seed predation
Pests:
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