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    • Types of Roses
    • Easy Roses
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    • Rose Bloom Balling
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Viburnum Leaf Beetle

Amanda's Garden Consulting

Holey Viburnum Leaves!

viburnum leaf beetle,Pyrrhalta viburni,holes in leaves,insect damage on shrubs,The Garden Website.com,Amanda's Garden Consulting,Amanda Jarrett,garden websites
viburnum leaf beetle,Pyrrhalta viburni,holes in leaves,insect damage on shrubs,The Garden Website.com,Amanda's Garden Consulting,Amanda Jarrett,garden websites
Control: 
  • Avoid susceptible varieties: European cranberrybush viburnum (V. opulus), arrowwood viburnum (V. dentatum), American cranberrybush viburnum (V. opulus var. americanum) and David viburnum (V. davidii).
  • Resistant viburnums include Korean spice viburnum (V. carlesii) Judd viburnum (V. x juddii), doublefile viburnum (V. plicatum f. tomentosum).
  • When purchasing viburnums, inspect plants thoroughly for any signs of VLB, including viburnums grouped together in the nursery.  
  • When plants show symptoms of an infestation, look for their eggs in autumn, from October to spring. Inspect stems closely for little pits packed with eggs. Destroy any infected twigs; do not compost them.
  • Encourage natural predators, green lacewings, assassin bugs, lady bugs, and spined soldier bugs, during the growing season - by not using pesticides!​
  • Apply dormant oil/lime sulfur in late winter before bud break to kill them as they overwinter on the twigs. For more on applying dormant oil and lime sulfur click here. 
Tattered viburnum leaves that resemble lace more than foliage, are symptoms of viburnum leaf beetles (Pyrrhalta viburni). Both the adult beetle and their larvae feed on many types of viburnums. The adult yellowish-brown beetles are ¼ long. The 1/3 inch long larva has noticeable black spots on their beige to yellow-green bodies.
 
The larvae emerges in May and feeds for several weeks. In mid-June the larvae return to the soil to pupate. In late June to early July, hungry adult beetles emerge and they chew oblong holes in the foliage. Plants can become completely threadbare and may die with repeated infestations. During the summer and through to October, females deposit their eggs into pits they’ve made in the stems. The eggs overwinter and emerge in spring as larvae.
viburnum leaf beetle,Pyrrhalta viburni,holes in leaves,insect damage on shrubs,The Garden Website.com,Amanda's Garden Consulting,Amanda Jarrett,garden websites

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  • Home
  • About, Services, Contact
  • Amanda's Garden Blog
  • 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
    • Hardening Off Plants
    • Taking Cuttings
    • Seed & Plant Catalogues
  • How to Garden Topics
    • Fall Garden Chores
    • Planting Know-How
    • Soil Building
    • Soil pH
    • 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
    • Fall Veggie Garden Clean-up
    • Crop Rotation, Succession & Companion Planting
    • Harvesting
    • Growing Potatoes
    • Winter Veggie Gardening
    • Taming Tomatoes
    • Speeding up Tomato Harvest
    • Tomato Tips
    • Saving Tomato Seeds
    • Raspberries
    • Tomato Troubles
  • Plant Pests 1
    • Plant Pests Part 2 - Controlling Insects
    • Garden Inspections
    • Cloches
    • Helping Pollinators
    • Critters in the Garden
    • Black Sooty Mould
    • Brown Marmorated Stink Bug
    • 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
    • Azaleas, Deciduous
    • Aubretia, Rock Cress
    • Aucuba, Japanese Spotted Laurel
    • Autumn Crocus
    • Bear's Breeches
    • Beautyberry, Callicarpa
    • Black-eyed Susans
    • Bleeding Heart, Lamprocapnos spectabilis
    • Calla Lilies
    • Catalpas
    • Chinese Windmill Palm
    • Columbine
    • Chrysanthemums
    • Crocuses
    • Dahlias
    • Dawn Redwood
    • Daylily
    • Delphiniums
    • Devil's Walking Stick, Aralia spinosa
    • Doghobble, Leucothoe
    • Dwarf Alberta Spruce
    • Dwarf Burning Bush
    • Elderberries, Sambucus
    • Evergreen Clematis
    • English Daisies
    • Fawn Lilies, Erythroniums
    • Fall Asters
    • Flowering Currants
    • Flowering Quince
    • Fritillaria
    • Garden Peonies
    • Garden Phlox
    • Ginkgo biloba
    • Grape-hyacinths
    • Handkerchief or Dove Tree
    • Hardy Fuchsia
    • Harry Lauder's Walking Stick
    • Heathers
    • Heavenly Bamboo
    • Hellebores, Lenten roses
    • Himalayan Sweet Box
    • Hydrangeas, Mophead & Lacecap
    • Jack-in-the-pulpit, Cobra Lily
    • Japanese Anemones
    • Japanese Forest Grass
    • Japanese Maples
    • Japanese Skimmia
    • Japanese spirea
    • Japanese Spurge
    • Kale, ornamental
    • Katsura Trees
    • Kousa Dogwood
    • Laurustinus viburnum
    • Lavenders
    • Lily-of-the-Valley Shrub, Pieris japonica
    • Mediterranean Spurge
    • Mexican Mock Orange
    • Montana Clematis
    • Mountain Ash
    • Oregon Grape Holly
    • Oriental Poppies
    • Oriental Lilies
    • Paperbark Maple
    • Pearl Bush
    • Persian Ironwood
    • Peruvian Lily, Alstroemeria
    • Phalaenopsis, Moth Orchids
    • Photinia, Fraser
    • Poinsettias
    • Primroses
    • Persian Silk Tree
    • Portuguese Laurel
    • Rose of Sharon
    • Saucer Magnolia
    • Shrubby Cinquefoil
    • Sneezeweed, Helenium
    • Snowberry
    • Snowdrops
    • Solomon's Seal
    • Star Magnolia
    • Strawberry Tree, Pacific Madrone
    • Stewartia
    • Torch Lily, Kniphofia uvaria
    • Tree Peonies
    • Tuberous Begonias
    • Variegated Wintercreeper
    • Viburnum, Pink Dawn Bodnant
    • Virginia Creeper
    • Weigela
    • Winterhazel, Corylopsis
    • Winter Camellia, C. sasanqua
    • Winter Daphne
    • Wintergreen, Gaultheria procumbens
    • Witch Hazel
    • Wood Anemones
    • Yews
  • Garden Tours & Such
    • NW Horticultural Society July Garden Tour 2024
    • Burnaby in Blooms
    • Burnaby's Century Gardens
    • South Delta Garden Club Tour 2023
    • Garden Club Events
  • Website Index
  • Subscribe
  • Need Help?
    • Gift Cards