Click on image to enlarge
|
DESCRIPTION:
Yellow starthistle is a long-lived winter annual weed. Seedlings are dull green.
Seed leaves are oblong, round at the tip, with smooth edges. The first
true leaves are longer and narrower with short, white hairs on the upper
surface. Mature plants are 1 to 3 feet (30 - 90 cm) tall. The bases of
the grayish leaves extend
down the stem. The bright yellow flowers have long stiff spines at their
base.
There is a parachute seed structure that is carried by the wind.
See UC IPM's Yellow Starthistle Pest Note
for more information.
Broadleaf ID illustration.
|
