Names link to more information on identification and biology.
Click on photos to enlarge
| In all California grape-growing
regions |
|
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.
|
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. |
Prickly lettuce
(Lactuca scariola): Sunflower family; winter annual or
biennial; seed leaves about 2 times longer than wide; first true
leaves with rounded margins.
|
Redstem filaree
(Erodium cicutarium): Geranium family; winter annual; seed leaves deeply
3- to 4-lobed, center lobe largest; first true leaf deeply lobed and covered
with white hairs; young leaves alternate or opposite and also deeply lobed. |
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. |
Swinecress
(Coronopus didymus): Mustard family; winter annual; seed leaves light
green, narrow, long, widest at tip; first true leaves club shaped with two notches
(teeth) around margin; leaves and stems slightly hairy; distinct skunk-like odor.
|
Whitestem filaree
(Erodium moschatum): Geranium family; winter annual
or biennial; seed leaves 3- to 4-lobed, center lobe largest;
true leaves arranged as opposite or alternate; leaves and
stems bristly and hairy.
|
All regions except Coachella Valley:
Henbit
(Lamium aplexicaule): Mint family; winter annual; seedling leaves small,
oblong, with smooth margins; first true leaves rounded, coarsely toothed, with
visible netted veins. |
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