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Amanda's Blog

Amanda's Garden Consulting Company

One huge beetle!

11/7/2017

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Picture
The Lined June beetle is nearly the size of my finger.

​Ten-lined June beetle (hissing beetles, watermelon beetles)
I found this huge beetle upside down, legs flailing, on my office carpet struggling to right itself. Talk about taking the wrong turn! I had no idea what kind of beetle it was other than it was big, and not too smart. Research was in order, so this is what I found out.

It is a Ten-lined June beetle (Polyphylla decemlineata) and it’s Native to North America. This large 1 inch (2.5) brown scarab beetle bears distinctive numerous white lines down its back. When disturbed it makes a hissing sound, although I didn’t hear anything when I retrieved it from my office. Maybe it was just too verklempt.

Their larva are similar to chafer beetle larva, as they are close relatives. The C-shaped grubs grow up to 2 inches with creamy white bodies and 3 pairs of legs situated near their brown heads. The grubs live in the soil and feed on plant roots. Infested plants wilt, even with adequate water, and are stunted.

The adults are nocturnal and hide among the plants during the day, but they do not feed on them. At dusk they seek out mates then hover around lights come nighttime. The adults emerge in late June through July in British Columbia and the Pacific Northwest. To control cultivate the soil to expose the grubs, discarding them as you go. The birds and other critters will help you control them as they seem to think they are quite tasty. 
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    Archives

    Here are some of my previous blog postings. They cover a wide range of topics from bugs to my botanical excursions and conventions. Click on whichever interests you on the titles below for easy navigation. 
    • ​Building a French Kitchen (Potager) Garden
    • Colourful Fall Plants
    • Tomato Taming
    • Speeding up Tomato Harvests
    • Saving Tomato Seeds
    • Plant Rusts
    • Dunbar Garden Club Garden Tour 2020
    • Rose Bloom Balling
    • ​Types of Roses
    • Easy Roses Do Exist.. Really!​
    • Easy Vegetable Garden Trellis 
    • Tomato Seedlings to Plants
    • Video: How to Divide Dahlias 
    • Video: How to Plant a Tree
    • Video: How to Prune a Grapevine in Winter
    • Damping Off - A Seedling Killer!
    • Lawns: ​Seeding, Sowing, Renovating
    • Lawn Grub Control
    • Tuberous Begonias 101
    • Dahlias 101
    • Pruning in Winter
    • Pruning & Training Grape Vines in Winter
    • Insects & Diseases Control with Dormant Spray
    • Dealing With Drought
    • Heritage Vancouver 7th Annual Garden Tour
    • Growing Potatoes
    • Pruning Shrubs into Trees
    • 10 Steps to Festive Planter
    • Christmas Tree Selection 
    • Collecting & Saving Seeds
    • Heritage Vancouver 6th Garden Tour
    • The Dunbar Garden Tour 2018
    • Dart's Hill, A Garden Park
    • VanDusen Botanical Gardens Visit
    • Tall Kale Tales
    • Northwest Flower & Garden Show, Seattle
    • Pruning in Winter
    • Pruning & Training Grape Vines in Winter
    • Insects & Diseases Control with Dormant Spray
    • Why Christmas cactus Don't Blossom
    • A Quickie Festive Swag
    • Putting the Garden to Bed
    • How to Drain Soggy Soil
    • A Visit to the Arizona - Sonora Desert
    • Banana, Palm Tree Winter Protection
    • Lasagna Gardening, Sheet Mulching
    • Saving Geraniums, Coleus, Bougainvilleas & Other Tender Plants 
    • Spiders Everywhere - Oh My!
    • Tomato Troubles & Soil Solarization
    • Trees That Drip That Sticky Stuff
    • Balcony Bliss
    • June Bugs - One Huge Beetle! 
    • A Summer's Day Harvest
    • The Dunbar Garden Club Private Tour
    • Leaky Birdbaths and Slug Free Strawberries
    • Oops... Wrong Plant, Wrong Place
    • I Had An Ugly Lawn...​
    • ​How to Make a Christmas Elf
    • Houseplant Winter Care
    • To subscribe to my blog click here. 

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Copyright © 2017
Photo used under Creative Commons from vwcampin
  • 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