ox-eye daisy (Chrysanthemum leucanthemum L.) Chemical Control
ROOTS: The oxe-eye daisy root is a perennial. They grow very slowly through the ground. The roots are hard and wiry, thus making it easy to grow through compact and tough soils. These plants are slightly branched and are furrowed.STEMS/LEAVES: The leaves are small and coarsely toothed. The leaves that are near the root are rounder than the ones near the stem.
They are on long stalks, and those that are on the stem are oblong and stalk less.FLOWERS: In the middle of May the yellow centered white flower
heads bloom. Under the head of the flower is a ring of sheathing bracts. These help protect and support the flower from the insects trying to bite their way in from below.FRUITS/SEEDS: The seeds are brown to black and are usually 16th of
an inch long. They have up to 10 white ridges down the side. The seeds
may be viable up to 10 days after the flower blossoms.HERBICIDES: Oxeye daisy is somewhat resistant to MCPA, 2,4-D and dicamba (Banvel¨), but the herbicides are effective in higher concentrations. Picloram (Tordon¨ 22K) and sulfometuron methyl (Oust¨) can also be used on daisies.
USEFUL HERBICIDES:
Herbicide Brand How to Apply When to Apply Comments 2,4-D spray in late fall or early spring Do not let dairy animals graze within 7 day of application Banvel spray 2 to 3 leaf stage no rainfast period is specified on the label, contact manufacturer for more information Tordon spray when perennial weeds have fully developed, green leaves rain within 6 hours of application may cause poor results Arsenal imazapyr Oust sulfometuronmethyl
Further information about these herbicides:
Herbicide Brand Active Ingredient Mode of Action Comments 2,4-D MCPA systemic abnormal growth in 2-10 days Banvel dicamba systemic Tordon picloram systemic works with cell division, causes leaf cupping and eventually death Arsenal imazapyr foliage further info: Oust sulfometuronmethyl
By: Nichole Near May 23, 2002
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