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Common Annual
Weeds in Pastures:
Characteristics and Pictures
Jerry
Doll |
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larger view. |
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Common Ragweed
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leaves lacy,
finely divided |
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leaves
alternate; stems hairy |
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male flowers
in terminal clusters |
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females in
leaf axils |
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Giant Ragweed
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edge of field
infestation |
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plant of giant
ragweed before flowering |
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flowers
dioecious as with common ragweed; male flowers above;
females in leaf axils |
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Pigweeds
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first leaves
have notch at tip; root often reddish pink |
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leaves and
stems pubescent (redroot) or hairless (smooth) |
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seed head
somewhat spiny |
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small, black,
shiny seeds |
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Smartweeds
(Pennsylvania and Ladysthumb)
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ochrea at leaf
axil |
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leaves rounded
at base; pointed at tip |
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Ladysthumb
leaves pointed at both ends, often have "thumb
print" |
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Yellow
Foxtail
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hairy ligule |
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leaves have
long hairs on upper surface at base of blade |
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seed head is
yellowish color, bristly, cylindrical and erect |
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yellow foxtail
in overgrazed pasture |
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