WSU Extension

Hortsense

Weeds
 
Annual bluegrass 
Barnyardgrass 
Bentgrass, creeping 
Bermudagrass 
Bittercress (Shotweed, Hairy bittercress) 
Bittersweet nightshade (European bittersweet) 
Black medic 
Blackberry (Himalayan, Evergreen, Pacific) 
Blue mustard (Purple mustard, Tenella mustard) 
Brackenfern, western 
Buffalobur 
Bull thistle 
Buttercup, creeping 
Canada thistle 
Catchweed bedstraw (Cleavers) 
Catsear, common (False dandelion) 
Chickweed, common and mouseear 
Clover 
Comfrey 
Crabgrass 
Dandelion 
Dock (Curly, Broadleaf) 
Dodder 
Downy brome (Cheatgrass, Downy chess) 
Dwarf mistletoes 
English daisy (Lawn daisy) 
English ivy 
Field bindweed (Wild morningglory) 
Field pennycress (Fanweed) 
Flixweed 
Foxtail (Green, Yellow, Bristly) 
Garden loosestrife 
Giant hogweed 
Goldenrods 
Groundsel, common 
Hawkweeds 
Hedge bindweed 
Henbit 
Herb Robert (Robert geranium, stinky Bob) 
Horsetails (Scouringrush) 
Horseweed (Marestail) 
Knapweeds 
Knotweeds (Bohemian, Giant, Japanese, Himalayan) 
Kochia 
Lambsquarters, common 
Liverworts 
Mallow, common (Cheeseweed, Buttonweed) 
Nightshades 
Oxalis (Creeping woodsorrel) 
Parrotfeather and Eurasian watermilfoil 
Pineappleweed 
Plantain (Broadleaf, Buckhorn) 
Poison hemlock 
Poison ivy and Poison oak 
Prickly lettuce (China lettuce) 
Prostrate knotweed 
Puncturevine (Tackweed, Goathead) 
Purple deadnettle (Red deadnettle) 
Purple loosestrife (Purple lythrum) 
Purslane, common 
Quackgrass 
Red sorrel (Sheep sorrel) 
Redroot pigweed (Rough pigweed) 
Redstem filaree (Stork's bill, Crane's bill) 
Reed canarygrass 
Russian thistle (Tumbleweed) 
Ryegrass, annual (Italian ryegrass) 
Salsify (Goatsbeard) 
Scotch broom 
Shepherd's-purse 
Smartweeds 
Sowthistle, annual and perennial 
Speedwells 
Spurges (Prostrate spurges) 
St. Johnswort, common (Goatweed, Klamathweed) 
Stinging nettle 
Tansy ragwort 
Tumblemustard (Jim Hill mustard) 
Velvetgrass (Common velvetgrass) 
Velvetleaf 
Water primrose 
Waterhemlock, western 
Yellow nutsedge 



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Caption: English ivy leaves
Photo by: C.R. Foss
  
Weeds : English ivy : Hedera helix
(revision date: 6/9/2016)

Family: Araliaceae
Cycle: Perennial
Plant Type: Broadleaf

Use Integrated Pest Management (IPM) for successful weed management.

Biology
English ivy is a low, dark green, fast-growing evergreen vine. It establishes roots at its nodes as it creeps along the ground, or aerial rootlets as it climbs trees and structures. It is widely planted in the West as a ground cover and as a climbing vine for fences and walls. Juvenile leaves are 3- to 5- lobed, between 2 and 4" long, and usually bear whitish or yellowish green veins. Upon growing vertically for several years, ivy will enter a mature reproductive phase, developing stiff branches with unlobed leaves up to 6" long. It then bears greenish-white clumps of flowers, followed by small black berry-like fruits. SPECIAL INFORMATION: In WASHINGTON, four cultivars of English ivy are designated as Class 'C' noxious weeds: Hedera helix 'Baltica,' 'Pittsburgh,' and 'Star' and Hedera hibernica 'Hibernica.' In OREGON, all varieties of Hedera helix and/or Hedera hibernica are designated as Class 'B' noxious weeds. They are also on the Oregon noxious weed quarantine list, which prohibits sale, purchase, and transport of plants, seeds, and plant parts. Management may be required by law in your county. Consult your local Noxious Weed Control Board for more information.
Habitat
English ivy thrives in rich, fairly moist, organic, well-drained soil under any level of sunlight. It can become invasive on woodland floors if left unchecked, smothering small plants in its path. It is known to completely cover tree trunks and larger limbs. While it is not parasitic, the dense ivy canopy may contribute to wind damage of trees because it catches the wind and creates a "sail" effect.

Management Options

Non-Chemical Management
  • Mow it close to the ground, then dig up the roots, removing as many as possible.
  • After top growth is cleared as much as possible, cover with a double layer of landscape fabric, black plastic, or cardboard, covered with bark or mulch.
  • To control ivy growing vertically, cut and pull it down in sections, and dig out the roots.
Select non-chemical management options as your first choice!

Chemical Management

When using glyphosate, it is best to cut or mow the ivy back as much as possible, and then paint the injured areas of cambium with the herbicide. NOTE: Some ingredients listed here are only available in combination. Read the label carefully on combination products to make sure the product is suitable for your specific situation.

Landscape areas
  • glyphosate
Turf areas
    Bare ground areas
    • glyphosate
    Images

    + Show larger images

     
    Caption: English ivy leaves
    Photo by: C.R. Foss
    Caption: English ivy vines
    Photo by: T.W. Miller
    Caption: English ivy flowers
    Photo by: T.W. Miller
    Caption: English ivy blooming
    Photo by: T.W. Miller
    Caption: English ivy vines climbing tree
    Photo by: B.M. Johnson
    Caption: English ivy vines
    Photo by: C.R. Foss
    Caption: English ivy vines climbing tree
    Photo by: B.M. Johnson