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Posted by dgk on March 6, 2008, 8:40 am
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>
>>I'm always too late for pre-emergent so this year I'm trying harder.
>>New York City, mostly concerned with dandelions, crabgrass, and
>>clover. Since I let my cats into the yard, I'd like to put something
>>down that will not harm them. I figure I can keep them inside for a
>>week or so to give the poison time to dissipate. Does it work like
>>that? If not, I guess I'm stuck with the weeds. Thanks.
>
>
>Pre-emergent herbicide is a must for crabgrass but is not a must for
>other weeds. Other weeds can be controlled without precise timing.
>
>The timing for using pre-emergent herbicide for crabgrass is best
>indicated by the Forsythia's bloom withering.
>
>I would think that the date would be around the first week in April.
>
>See this page for further details
>http://hcs.osu.edu/Landscape/notes/displaybw.lasso?-database=forums&-table=forumposts&id=1303&-search
Ah, so I need to do this two weeks before the daffodils bloom withers.
I don't know of Forsythia near my house but since 9/11 some Dutch
company has been flooding NYC with free daffodil bulbs so the whole
area has daffodils planted. I noticed last week that they were coming
up.
So another few weeks and I get to nail the crabgrass at least. That
will take out about half my lawn I guess. I really lost the battle
last year.I'll be seeding quite a bit.
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