| Agronomy
105's Weed ID |
|
|
|
Perennial sowthistle
|
|
|
| Perennial
sowthistle is not as troubling in Indiana as it is in states to our west. |
 |
|
|
 |
The plant
can spread both by seed and by an extensive creeping underground root stock.
It has large leaves at its base which have soft spines on their margins. |
|
|
| The inflorescence
is very pronounced and contains easily identifiable, deep yellow flowers.
If the stems of this species are cut open they will exude a milky white
sap much like that of milkweed. |
 |
|
|
 |
The seeds
are brownish, slender and will be somewhat flattened. Each seed will
have 5-7 ridges running its length. Quite often the seeds will be
found with a small tuft of hair attached. Perennial sowthistle is
usually found in waste areas and in field crops. This weed is often
confused with annual sowthistle, but is much more difficult to control. |