New lawn taken over by crabgrass?

A forum to learn and discuss the importance of lawn care basics
Post Reply
Bobbylena
Posts: 2
Joined: July 1st, 2020, 9:41 am
Location: Massachusetts
Grass Type: Don’t know
Lawn Size: Not Specified
Level: Not Specified

New lawn taken over by crabgrass?

Post by Bobbylena » July 1st, 2020, 11:18 am

Finally after removing a huge pine tree we were able to get some seed down and at first came in great. We used Scott’s Turf Builder Sun and Shade grass seed and put it down on Memorial day and live in Massachusetts Is this crab grass and is there anything we can do?
Image

Image

Bobbylena
Posts: 2
Joined: July 1st, 2020, 9:41 am
Location: Massachusetts
Grass Type: Don’t know
Lawn Size: Not Specified
Level: Not Specified

Re: New lawn taken over by crabgrass?

Post by Bobbylena » July 1st, 2020, 1:38 pm

Close up picture of weed, nutsedge?


Image

User avatar
andy10917
Posts: 29739
Joined: February 23rd, 2009, 10:48 pm
Location: NY (Lower Hudson Valley)
Grass Type: Emblem KBG (Front); Blueberry KBG Monostand (Back)
Lawn Size: 1 acre-2 acre
Level: Advanced

Re: New lawn taken over by crabgrass?

Post by andy10917 » July 1st, 2020, 2:43 pm

Use products containing fair amounts of Quinclorac, or get straight Quinclorac and MSO (Methylated Seed Oil). Apply as the label directs.

Quinclorac is one of the safest products for newly-seeded/young lawns.

User avatar
ken-n-nancy
Posts: 2571
Joined: July 17th, 2014, 3:58 pm
Location: Bedford, NH
Grass Type: Front: KBG (Bewitched+Prosperity); Side: Bewitched KBG; Back: Fine Fescue Blend + Prosperity
Lawn Size: 10000-20000
Level: Experienced

Re: New lawn taken over by crabgrass?

Post by ken-n-nancy » July 1st, 2020, 3:06 pm

Bobbylena wrote:
July 1st, 2020, 1:38 pm
Close up picture of weed, nutsedge?

Image
It's not nutsedge. I'm speculating that Andy's recommendation of quinclorac with MSO isn't for nutsedge, but is rather for something that is more likely in the crabgrass family. (Quinclorac plus MSO is the weapon of choice for germinated crabgrass.)

For future reference, nutsedge is very distinctive. The definitive way to identify nutsedge is the triangular stem, just above the roots and before the leaves all separate from the stem. You can feel this by rolling the stem in your fingers or by cutting a cross-section of the stem. See the photo below for a cut cross-section of the stem. (Photo from the nutsedge page at Michigan State University: https://www.canr.msu.edu/resources/yellow_nutsedge)

Image

Post Reply

Who is online

Users browsing this forum: No registered users and 9 guests