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: Common purslane succulent leaves and flower
Photo by: D.G. Swan
  
Weeds : Purslane, common : Portulaca oleracea
(revision date: 10/14/2016)

Family: Portulacaceae
Cycle: Annual
Plant Type: Broadleaf

Biology
Common purslane reproduces by seeds, but it can also root from the stems or stem fragments which contact the soil. Common purslane is usually a prostrate plant from a taproot, with fleshy, reddish stems and succulent, green leaves. It can be mat-forming. Plants growing in shade are more upright and produce fewer leaves than plants in full sun. The leaves are oval, about 1/2-inch long, and alternate or nearly opposite, often in clusters. The leaf tips may be blunt or slightly rounded and petioles are absent. Tiny, five-petalled, yellow flowers may be seen in bright sunlight. Tiny black seeds are produced in small capsules that split open across the center. SPECIAL INFORMATION: The fleshy stems and thick, blunt leaves are distinguishing characteristics and also contribute to the plants' survival after pulling. The stems are brittle and break easily, creating fragments which re-root easily after cultivation. Purslane has been used as a vegetable, but it may accumulate oxalates, which can be toxic.
Habitat
Common purslane is a common weed of gardens, lawns, waste areas, and cultivated fields. It grows best on rich, moist soils and can grow in sun or shade.

Management Options

Non-Chemical Management
  • Maintaining a healthy planting or turf area to provide competition will prevent weed establishment.
  • Cultivation (rototilling or hoeing) will effectively eliminate plants.
Select non-chemical management options as your first choice!

Chemical Management

Apply according to label directions. Glyphosate and glufosinate products should be applied as spot treatments only! 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
  • dichlobenil
  • oryzalin
  • glufosinate
Turf areas
  • triclopyr
  • 2,4-D + MCPP + dicamba
Bare ground areas
  • glyphosate
  • oryzalin
  • triclopyr
Images

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Caption: Common purslane succulent leaves and flower
Photo by: D.G. Swan
Caption: Purslane
Photo by: T.W. Miller
Caption: Common purslane seedlings
Photo by: R. Parker
Caption: Common purslane leaves and fruits
Photo by: D.G. Swan