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 
Lesser celandine 
Liverworts 
Mallow, common (Cheeseweed, Buttonweed) 
Nightshades 
Oxalis (Creeping woodsorrel) 
Parrotfeather and Eurasian watermilfoil 
Pineappleweed 
Plantain (Broadleaf, Buckhorn) 
Poison hemlock 
Poison ivy and Poison oak 
Pokeweed 
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: Pokeweed plant
Photo by: K. Volkov
  
Weeds : Pokeweed :
(revision date: 10/15/2019)

Family: Phytolaccaceae
Cycle: Perennial
Plant Type: Broadleaf

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

Biology
Pokeweed is a shrub-like herbaceous perennial. It can grow quickly to a height of up to 10' in one year. The central stem bears egg-shaped leaves which can range from 6"-12" in length. Leaves are alternate and have pointed ends and crinkled edges. Pokeweed stems are reddish. It has a carrot-like taproot. The entire plant dies back to the ground in the fall. Pokeweed blooms during the summer. The flowers are in greenish-white long clusters (racemes. By late summer, berries have begun to form, at first green and later purplish-black. SPECIAL INFORMATION: The berries and roots are highly poisonous to humans.
Habitat
Pokeweed does well in either full sun or partial shade. It can grow on a wide range of soil types.

Management Options


Non-Chemical Management
  • Hand remove first-year plants early in the growing season. The large taproot makes it difficult to remove established plants.
  • Cut plants numerous times during the growing season each year until controlled.
Select non-chemical management options as your first choice!

Chemical Management

Apply a systemic herbicide to the foliage in late summer.

Landscape areas
  • glyphosate
Turf areas
    Bare ground areas
      Images

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      Caption: Pokeweed plant
      Photo by: K. Volkov
      Caption: Pokeweed berries
      Photo by: K. Volkov
      Caption: Pokeweed stem
      Photo by: K. Volkov