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| | | Annual bluegrass | | Barnyardgrass | | Bentgrass, creeping | | Bermudagrass | | Birdfoot Trefoil | | 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 | | Butterfly bush | | Canada thistle | | Catchweed bedstraw (Cleavers) | | Catsear, common (False dandelion) | | Chickweed, common and mouseear | | Clover | | Comfrey | | Crabgrass | | Creeping Jenny | | 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 | | Ground ivy | | 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 | | Wild carrot (Queen Anne's lace) | | Yellow nutsedge |
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Caption: Creeping Jenny flower
Photo by: H. Zell
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Weeds : Creeping Jenny :
(revision date: 4/7/2021)
Family: Primulaceae
Cycle: Perennial
Plant Type: Evergreen
Use Integrated Pest Management (IPM) for successful weed management.
Biology
Lysimachia nummularia, commonly called moneywort or creeping Jenny, is a low-growing, creeping ground cover which forms a leafy mat only 2-4" tall. Roots where leaf nodes come in contact with the soil. Thrives in damp soils which will often kill off other types of ground covers. It features rounded, slightly ruffled, leaves (to 3/4" diameter). Profuse, cup-shaped, bright yellow flowers (to 3/4" across) appear in early summer. Tolerates limited foot traffic.
Plants spread by rhizomes and self-seeding in optimum growing conditions to form large colonies. Stems may root where leaf nodes touch the ground. Plants tend to be less invasive if grown in lean, somewhat dry soils, however best performance is in moist fertile soils.
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Habitat
Lysimachia nummularia can be found in a variety of different habitat types; however, it grows most vigorously and poses the biggest threat in moist areas such as wet meadows, swamps, floodplain forests, stream banks, bottoms, ditches, roadsides and along the banks of small water bodies. It can form a mat-like growth capable of excluding more desirable native plant species. It is native to Europe but is now found across the United States and Canada.
Non-Chemical Management
- Maintaining a healthy planting or turf area to provide competition will prevent weed establishment.
- If Creeping Jenny is established in your lawn it may take two seasons to eradicate it.
- The plant can be hand pulled where practical. All stems and stem fragments should be removed from the area to prevent the stems from rooting again in the soil. Prolonged submergence will kill Creeping Jenny. At restoration sites, it can be controlled by establishing native grasses to shade it out. Mowing is not effective since Creeping Jenny adheres closely to the ground due to its many rooting nodes.
Select non-chemical management options as your first choice!
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Images
+ Show larger images
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Caption: Creeping Jenny flower
Photo by: H. Zell
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Caption: Creeping Jenny close-up
Photo by: D. Stang
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Caption: Creeping Jenny
Photo by: D. Stang
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