The time has come! Stop the ‘Weed Apocalypse’ now! Many
terrorist of different genus and species are prepared to attack you where you
live! Prepare to fight! Stop the spread of the obnoxious weed species now
before it is too late! Weeds cause disease and mayhem! Weed jihad against your
yard and flower beds!
What you are targeting now are small seeded winter annual
weeds. These are weeds that germinate
from seeds late summer, grow into plants during the winter, then flower and
produce seed for the following year in early spring. The seeds lay dormant over the summer, and
then germinate late summer to begin another life cycle.
Some examples of the most common winter annual weeds are
annual bluegrass (Poa annua), chickweed, Carolina
geranium, and Henbit. The weed that we
get the most complaints about is annual bluegrass. It is the grassy weed with the white seed
head in late March, early April. If you
control your winter weeds now with a preemergent herbicide, you usually will
not have to mow your grass until later.
All of these weeds are very visible in a brown dormant grass. These
weeds also compete with your existing turf when it tries to come out of
dormancy in April.
A couple of weeds that are not annual weeds that are visible
at the same time are Dollar weed and Florida Betony (rattlesnake or artichoke
weed). These weeds require different
control methods since they are not coming up from seed.
Many customers of ours at Possum’s have reported a drastic
reduction in Florida Betony by using the higher rate of Dimension right now. I
have done research for the manufacturer (Dow AgroSciences) and have shown great
results in all my test plots. Technically,
since Dow did not pay the EPA the money to add this application to the label
because this weed is not significant enough in their eyes to recoup the money
paid to the EPA, I cannot recommend this application. If you have Florida
Betony and are going to use a preemergent product for annual bluegrass, you
might want to give a product containing Dimension a try.
Dimension comes in many strengths, so be sure you purchase
the correct one. We see many national companies selling the lower active
ingredient product (0.10%, 0.13%, and 0.15%) and not advising the customer
about the higher use rates required in the Coastal South for this product.
Preemergent products do what their name implies. These products kill the weeds seed before it
can emerge from the ground. By killing
the weed before it emerges from the ground, you are making your life a lot
easier. Killing weeds after they emerge
(post-emergent) is much harder on you and your grass.
Be careful to read and follow product labels so that you do
not over-apply products. Since a lot of
people put out preemergent products as a granular, be careful not to overlap
too much or you can damage your turf.
Now is the time to put out preemergent products (two weeks
before the soil temperatures are ready for winter weeds to germinate). Various fertilizers such as; 16-00-08,
15-00-15, 00-00-07and 23-00-08 combined with preemergent will give your lawn
and shrubs (don’t forget the shrubs!) one last feeding of nitrogen for the year
while controlling the weeds. Usually you
will want to come back with another preemergent in 6-10 weeks depending on the
products you use and the weather conditions.
Mosquito invasion! Don’t get me started….
