Total nonsense. Weed and feed will do absolutely zippo to solve his
crabgrass problem, because these are only effective against broadleaf
weeds. Crabgrass is not a broadleaf weed.
As someone here also said, a preemergent is good, but the
Not only is it good, it's be easiest and most effective way of dealing
With the weed and feed varieties, the drawback is that
You can't apply any herbicide every few days, whether it's a weed and
feed product or not. And again weed and feed will not kill
crabgrass. But the fertilizer in it will surely help it grow.
Given how late it is in the season, the best thing to do is just wait
for it to die, which it will do by late next month. As someone else
advised, if the grass has been heavily damaged and is sparse, then you
should overseed, using a slice seeder to cut into what's there. If
you need to seed, I'd wait till end of Sept, to time the seed
germination with the approaching end of the crabgrass.
Have you thought of crabgrass killer? I am too lazy to go out back and
check the bottle, but it is 4 letters starting with a M; not MSDS, but
something like that.
Works well and doesn't hurt the real grass. Put is on now, so hopefully you
can get some grass seed down soon.
Crabgrass takes over a little strip at the road every few years, but this
stuff does the trick.
Crabgrass killers are most effective when applied when the plants are
still small. At this stage, it will take multiple applications.
And I've never had much success with the typical post-emergence
crabgrass products you find at the home or garden center. They
typical take several applications to work, even on modest plants, and
damage the turf in the process.
Acclaim is very effective and does not damage the turf. However, it
is relatively expensive. If it was July or early Aug, I'd say use
it. But given how late in the season it is, I would just let it die
Agree...best bet would be to mow short and regularly the infested area
using a bagger and dispose of the clippings to minimize seed production
for next year, then go to the preemergent in the spring...
Another approach that's cheaper than the granular preemergents if have
access to it (may take knowing somebody w/ an applicator's license or a
farmer depending on your locale) is a _very_ early spring application of
Atrazine -- it is a pre-emergent as well and will stop almost all early
annual germinating. For bluegrass turf, etc., it will be ok if used
very early (like February before it comes out of dormancy).
In general, not true. There are many weeds that continue to grow all
fall even into winter and continue to make the lawn a mess and they
will still be there stronger than ever come Spring. Nothing wrong
with treating weeds now, it isn't even Fall yet. And while most
herbicides specify a min period until you can seed, it's typically
around 30 days or so, not 90. Most effective is to use spot
treatment, rather than a weed/feed type product.
Very true...particularly the dandy-lions are good to work on right now
as they're in the process of taking up nutrients for the winter so
herbicide effectiveness is good (assuming they're not heavily
drought-stressed, they do need to be actively growing for best
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