This is the second year in our new house in the northeast region. The
builder didn't do a good job of hydroseeding the lawn in the spring of
2004. As a result there were lots of bald patches and during summer and
fall I saw crab grass taking over everywhere. I tried to overseed but
it didn't take root. Ony crabgrass grew in those areas. I applied a
fall fertilizer in november. It is now spring and I see nice green
color in several areas but I also see all dead crab grass in sevral
areas mixed in with green grass. I would like to overseed properly this
year (what seed mixture do I use for connecticut and how should I do it
so it takes root?) I also would like to apply scot turf builder with
crab grass control but I am not sure about timing of these two as I am
afraid one might kill the other. Any help is appreciated.
Immediately apply a pre-emergence crabgrass preventer. One with
fertilizer should be fine, but follow the directions carefully. That
will last about 3 months and prevent seed from germinating. Do not
allow the crabgrass to tassle. You can use a spot weed treatment (such
as Weed-B-Gone or Specrtride) now that weeds are actively growing but
this won't stop the crabgrass. Test the pH and apply lime only if
needed. It would be good to test the soil for nutrients and add
whatever is needed. After three months of the pre-emergence with
fertilizer you can apply a turf builder or processed organic
fertilizer (Milorganite, pelletized chicken manure, composted mushroom
compost, etc). Prepare the site for overseeding in the fall by
refraining from use of chemicals for at least 2 months, dethatching if
necessary, aerating if needed. Use high quality seed. Ask several
nurseries about the best grass lawn for your area. On the overseeding
day use a starter fertilizer, distribute the seed, protect with straw
and keep moist for 3 weeks. Maybe Kentucky bluegrass mix will grow
well in your area--a fine, soft, hardy barefoot grass. Be generous
with the seed application and fill in any bare soil especially in
sunny locations--this will help shade out the crabgrass problem.
Crabgrass seed can remain dormant for 20 years. The fertilizer you
applied in November was a very good thing.
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