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  • Home
  • About, Services, Contact
  • Ask Amanda
  • Roses
    • Types of Roses
    • Easy Roses
    • Climbing Roses
    • Portland's Rose Test Garden
    • Rose Insects & Diseases
    • Pruning Roses
    • Rose Sawfly
    • Rose Bloom Balling
  • Pruning Basics 101
    • Pruning Tools
    • Winter Pruning
    • Pruning Grapes
    • Pruning Clematis
    • Prune Your Own Garden Registration
  • Lawn Basics
    • Lawn Reno, Seed & Sod
    • Lawn Maintenance Schedule
    • Spring Lawn Care
    • Moss in Lawns
    • Lawn Alternatives
    • Lawn Grub Control
  • Mulch & Mulching
    • Living Mulches - Groundcovers
  • Propagation
    • Growing Seeds Outdoors
    • Growing Seeds Indoors
    • Taking Cuttings
    • Seed & Plant Catalogues
  • How to Garden Topics
    • Fall Garden Chores
    • Planting Know-How
    • Soil Building
    • Watering Tips & Techniques
    • Drought Gardening
    • Sheet Mulching, Lasagna Gardening
    • Cover Crops
    • Composting
    • Compost Tea
    • Houseplant Winter Care
    • Hummingbirds in Winter
    • Winterize Your Garden
    • Ponds in Winter
  • Growing Food
    • Spring Veggie Gardening
    • Crop Rotation, Succession & Companion Planting
    • Harvesting
    • Growing Potatoes
    • Winter Veggie Gardening
    • Taming Tomatoes
    • Speeding up Tomato Harvest
    • Tomato Tips
    • Saving Tomato Seeds
    • Tomato Troubles
  • Plant Pests 1
    • Plant Pests Part 2 - Controlling Insects
    • Garden Inspections
    • Helping Pollinators
    • Dogwood Anthracnose
    • Viburnum Leaf Beetle
    • Dormant Oil/Lime Sulfur
    • Japanese Beetles
    • Peony Blotch/Measles
    • Slugs & Snails
    • Horsetail, the Weed
    • June Beetle
    • Powdery Mildew
    • Soil Solarization
    • Rhododendron Leaf Spot
    • Plant Rusts
    • Black Knot
  • Container Growing
    • Choosing a Container
  • Feeding Plants 101
    • Fertilizers & Ratios
    • Nutritional Deficiencies & Toxicities
    • Organic Plant Food
  • Plant of the Month
    • Spring Flowering Bulbs
    • Colourful Fall Plants
    • Abelia
    • American Sweetgum
    • Ash (Fraxinus) Trees
    • Astilbes
    • Aubretia, Rock Cress
    • Aucuba, Japanese Spotted Laurel
    • Autumn Crocus
    • Bear's Breeches
    • Beautyberry, Callicarpa
    • Black-eyed Susans
    • Bleeding Heart, Lamprocapnos spectabilis
    • Calla Lilies
    • Dahlias
    • Daylily
    • Delphiniums
    • Devil's Walking Stick, Aralia spinosa
    • Dwarf Alberta Spruce
    • Dwarf Burning Bush
    • Evergreen Clematis
    • Fall Asters
    • Flowering Currants
    • Flowering Quince
    • Fritillaria
    • Garden Peonies
    • Garden Phlox
    • Ginkgo biloba
    • Grape-hyacinths
    • Handkerchief or Dove Tree
    • Harry Lauder's Walking Stick
    • Heathers
    • Hellebores, Lenten roses
    • Himalayan Sweet Box
    • Jack-in-the-pulpit, Cobra Lily
    • Japanese Anemones
    • Japanese Forest Grass
    • Japanese Maples
    • Japanese Skimmia
    • Japanese Spurge
    • Laurustinus viburnum
    • Lavenders
    • Lily-of-the-Valley Shrub, Pieris japonica
    • Mediterranean Spurge
    • Mexican Mock Orange
    • Montana Clematis
    • Mountain Ash
    • Oriental Poppies
    • Oriental Lilies
    • Paperbark Maple
    • Pink Dawn Bodnant Viburnum
    • Poinsettias
    • Oregon Grape Holly
    • Ornamental Kale
    • Peruvian Lily, Alstroemeria
    • Phalaenopsis, Moth Orchids
    • Persian Silk Tree
    • Portuguese Laurel
    • Rose of Sharon
    • Sneezeweed, Helenium
    • Snowberry
    • Snowdrops
    • Star Magnolia
    • Strawberry Tree, Pacific Madrone
    • Stewartia
    • Torch Lily, Kniphofia uvaria
    • Tree Peonies
    • Tuberous Begonias
    • Virginia Creeper
    • Weigela
    • Winterhazel, Corylopsis
    • Winter Camellia, C. sasanqua
    • Wintergreen, Gaultheria procumbens
    • Witch Hazel
    • Wood Anemones
    • Yews
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Rose of Sharon

Amanda's Garden Consulting 

a Hardy Hibiscus for the North

rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
Rose of Sharon resembles its cousin, the tropical hibiscus.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
Mature plants grow to 12 feet high and spread to 10 feet wide.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
A stunning cultivar accentuates the pistil column in the flower's centre.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
Many rose of Sharon blossoms have a splashy contrasting eye surrounding the base of the pistil stalk.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
Flowers only last a day, but they are profuse with plants blossoming from July until frost.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
A double variety.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
Flowers preparing to open for the day.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
Small black seeds are released from these capsules in October.
Common Name:  rose of Sharon
Botanical Name:  Hibiscus syriacus
Form:    upright vase, multi-stemmed
Family:  Malvaceae
Genus:  Hibiscus
Species:  syriacus
Plant Type: deciduous shrub
Mature Size:  8 to 12 feet x 6 to 10 feet
Growth: fast
Origin:  China to India
Hardiness Zone: 5 to 8
Foliage: palmate veined with 3 lobes and coarsely serrated margins up to 4 inches long.
Flowers: June to October, circular flared 5 petalled blossoms up to 3 inches wide, single prominent pistil column with many stamens. Pinks, reds, purples and white, often with a colourful eye in the centre.
Fruit: seed pods with small black viable seeds in October.
Exposure:  full sun to light shade.
Soil:  soil tolerant but prefers moist well-drained soil. Benefits from a layer of mulch. Aborts flower buds if soil is too dry.
Uses:  mix borders, hedgerow, naturalize, birds, butterflies, foundation, containers.
Propagation:  semi-hardwood cuttings just prior to flowering, seeds (seedlings may not resemble parent plant).
Pruning:  late winter before new growth emerges.
​Problems:  self-seeds, no serious problems, slight susceptibility of Japanese beetles, whiteflies, aphids, rusts, blights.
Comments:  
Rose of Sharon are the hibiscus of the north. This showy shrub is a hardy relative of the more exotic and tropical hibiscus, Hibiscus rosa-sinensis (USDA Zones 9 to 11). Their hollyhock-like flowers last for just a day, however, they blossom for a few months in late summer to frost. Many cultivars are available with colours ranging from reds, blues, purples and whites. A protruding stamen laden pistil is surrounded by 5 petals for single varieties and many more for double varieties. A colourful contrasting ‘eye’ often surrounds the base of the pistil.
 
Rose of Sharon perform best in full sun in humus rich moist soil surrounded by 3 inches of an organic mulch. Although they like the heat of summer they do not like dry soil and will abort their flower buds if the soil is too dry. On the other hand, yellow foliage often indicates overwatering.
 
If conditions are satisfactory their seeds will form colonies around the mother plant. However, since the babies will not be identical to the parent plant, you might get some beauties – if you want to grow them on. Winterkill:
Avoid fertilizing after July as new growth is susceptible to frost damage.
Winter Protection:
In Zones 5 and less, pile 6 inches of a winter mulch over the crown (where stem and roots meet).
Pruning
To prevent leggy-ness and encourage compact growth, cut back stems back to 2 to 3 buds in late winter to early spring.
Deadhead
​Remove spent blossoms after flowering to prevent them from re-seeding in areas where it is a problem.
Birds & Wildlife: Blossoms are frequented by bees, butterflies and other pollinators. Their seeds provide food for many birds. 
​
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
Seedlings under the parent plant are common when conditions are favourable.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
Rose of Sharon are tolerant of cold weather and are hardy USDA Zones 5 to 8.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
Serrated foliage bears 3 lobes and grow up to 4 inches long.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
To encourage bushy growth, cut back stems to just above a bud (node) or leaf.
rose of Sharon,Hibiscus syriacus,fall flowering shrub,autumn flowering shrub,The Garden Website.com,Amanda’s Garden Consulting,Amanda Jarrett,garden website
Depending on the variety, blossoms can span to 4 inches.

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Copyright © 2017
  • Home
  • About, Services, Contact
  • Ask Amanda
  • Roses
    • Types of Roses
    • Easy Roses
    • Climbing Roses
    • Portland's Rose Test Garden
    • Rose Insects & Diseases
    • Pruning Roses
    • Rose Sawfly
    • Rose Bloom Balling
  • Pruning Basics 101
    • Pruning Tools
    • Winter Pruning
    • Pruning Grapes
    • Pruning Clematis
    • Prune Your Own Garden Registration
  • Lawn Basics
    • Lawn Reno, Seed & Sod
    • Lawn Maintenance Schedule
    • Spring Lawn Care
    • Moss in Lawns
    • Lawn Alternatives
    • Lawn Grub Control
  • Mulch & Mulching
    • Living Mulches - Groundcovers
  • Propagation
    • Growing Seeds Outdoors
    • Growing Seeds Indoors
    • Taking Cuttings
    • Seed & Plant Catalogues
  • How to Garden Topics
    • Fall Garden Chores
    • Planting Know-How
    • Soil Building
    • Watering Tips & Techniques
    • Drought Gardening
    • Sheet Mulching, Lasagna Gardening
    • Cover Crops
    • Composting
    • Compost Tea
    • Houseplant Winter Care
    • Hummingbirds in Winter
    • Winterize Your Garden
    • Ponds in Winter
  • Growing Food
    • Spring Veggie Gardening
    • Crop Rotation, Succession & Companion Planting
    • Harvesting
    • Growing Potatoes
    • Winter Veggie Gardening
    • Taming Tomatoes
    • Speeding up Tomato Harvest
    • Tomato Tips
    • Saving Tomato Seeds
    • Tomato Troubles
  • Plant Pests 1
    • Plant Pests Part 2 - Controlling Insects
    • Garden Inspections
    • Helping Pollinators
    • Dogwood Anthracnose
    • Viburnum Leaf Beetle
    • Dormant Oil/Lime Sulfur
    • Japanese Beetles
    • Peony Blotch/Measles
    • Slugs & Snails
    • Horsetail, the Weed
    • June Beetle
    • Powdery Mildew
    • Soil Solarization
    • Rhododendron Leaf Spot
    • Plant Rusts
    • Black Knot
  • Container Growing
    • Choosing a Container
  • Feeding Plants 101
    • Fertilizers & Ratios
    • Nutritional Deficiencies & Toxicities
    • Organic Plant Food
  • Plant of the Month
    • Spring Flowering Bulbs
    • Colourful Fall Plants
    • Abelia
    • American Sweetgum
    • Ash (Fraxinus) Trees
    • Astilbes
    • Aubretia, Rock Cress
    • Aucuba, Japanese Spotted Laurel
    • Autumn Crocus
    • Bear's Breeches
    • Beautyberry, Callicarpa
    • Black-eyed Susans
    • Bleeding Heart, Lamprocapnos spectabilis
    • Calla Lilies
    • Dahlias
    • Daylily
    • Delphiniums
    • Devil's Walking Stick, Aralia spinosa
    • Dwarf Alberta Spruce
    • Dwarf Burning Bush
    • Evergreen Clematis
    • Fall Asters
    • Flowering Currants
    • Flowering Quince
    • Fritillaria
    • Garden Peonies
    • Garden Phlox
    • Ginkgo biloba
    • Grape-hyacinths
    • Handkerchief or Dove Tree
    • Harry Lauder's Walking Stick
    • Heathers
    • Hellebores, Lenten roses
    • Himalayan Sweet Box
    • Jack-in-the-pulpit, Cobra Lily
    • Japanese Anemones
    • Japanese Forest Grass
    • Japanese Maples
    • Japanese Skimmia
    • Japanese Spurge
    • Laurustinus viburnum
    • Lavenders
    • Lily-of-the-Valley Shrub, Pieris japonica
    • Mediterranean Spurge
    • Mexican Mock Orange
    • Montana Clematis
    • Mountain Ash
    • Oriental Poppies
    • Oriental Lilies
    • Paperbark Maple
    • Pink Dawn Bodnant Viburnum
    • Poinsettias
    • Oregon Grape Holly
    • Ornamental Kale
    • Peruvian Lily, Alstroemeria
    • Phalaenopsis, Moth Orchids
    • Persian Silk Tree
    • Portuguese Laurel
    • Rose of Sharon
    • Sneezeweed, Helenium
    • Snowberry
    • Snowdrops
    • Star Magnolia
    • Strawberry Tree, Pacific Madrone
    • Stewartia
    • Torch Lily, Kniphofia uvaria
    • Tree Peonies
    • Tuberous Begonias
    • Virginia Creeper
    • Weigela
    • Winterhazel, Corylopsis
    • Winter Camellia, C. sasanqua
    • Wintergreen, Gaultheria procumbens
    • Witch Hazel
    • Wood Anemones
    • Yews
  • Garden Tour Blogs
  • Monthly Flower Arrangements
  • Website Index
  • Subscribe
  • Need Help?
  • Garden Club Events