|
|
Lettuce
> Year-Round IPM Program > Preplant > Winter
Annual Weeds (Central Coast)
Lettuce
Winter Annual Weeds—Central Coast
On this page
- Annual bluegrass
- Burning netttle
- Common chickweed
|
- Common groundsel
- Little mallow (Cheeseweed)
- Pineappleweed
|
- Sheperd's-purse
- Common sowthistle
- Henbit
|
See also, winter annual weeds of other
regions: Central Valley and
Desert.
Use the photos below to identify weeds
in the field. Names link to more information on identification
and biology.
Click on photos to enlarge
Annual bluegrass
(Poa annua): Grass family; winter annual; leaf tip shaped like bow of
a boat; membranous ligule rounded with slightly pointed tip; leaf blade crinkled
at midsection.
|
Burning nettle
(Urtica urens): Nettle family; winter or summer annual; rounded seed leaves
with smooth margin and small notch at tip; first true leaves with small notch
at tip, opposite, stalked, and distinctly toothed. |
Common chickweed
(Stellaria media): Pink family; winter annual; seed leaves with prominent
midveins, about 4 times longer than wide, tapering to point at tip; true leaves
broader, opposite, and yellow-green. |
Common groundsel
(Senecio vulgaris): Sunflower family; winter annual; seed leaves narrow,
with blunt narrow tip; first true leaves with shallow teeth; third and fourth
leaves more deeply lobed. |
Little mallow (Cheeseweed)
(Malva parviflora): Mallow family; winter annual; seed leaves heart shaped,
sometimes with red tinge; true leaves roundish with wavy, shallow-toothed margins. |
Pineappleweed
(Chamomilla suaveolens): Sunflower family; summer
or winter annual; seed leaves narrowly oblong to linear, fused at base,
pointed or rounded at the tip; first true leaves opposite, smooth-edged
or with feather-like lobes; later leaves alternate, with feather-like
lobes, forming a rosette.
|
Shepherd’s-purse
(Capsella bursa-pastoris): Mustard family; winter annual; seed leaves
pale green with tiny granules on surface; first true leaves with smooth margins;
fourth and later leaves may be indented; true leaves covered with star-shaped
hairs.
|
Common sowthistle
(Sonchus oleraceus): Sunflower family; summer annual;
seed leaves markedly stalked, almost spoon-shaped, rounded
at tip and often have grayish powdery bloom. |
Henbit
(Lamium amplexicaule): Mint family; winter annual; seedling
leaves small, oblong, with smooth margins; first true leaves
rounded, coarsely toothed, with visible netted veins. |
Top of page
|
