Weed Identification

depeche(5)July 10, 2014

I am trying to identify all of the weeds in our yard/garden. Can anyone help with these?

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depeche(5)

Tiny purple/blue flowers.

    Bookmark   July 10, 2014 at 11:05PM
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depeche(5)

White spires

    Bookmark   July 10, 2014 at 11:06PM
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depeche(5)

Final one, lavendar blooms

    Bookmark   July 10, 2014 at 11:07PM
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myrmayde(5b Western Montana)

The final picture with lavender blooms is some kind of knapweed, maybe spotted. Definitely get rid of it.

    Bookmark   August 2, 2014 at 1:51AM
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floral_uk z.8/9 SW UK

'White spires' are Melilotus alba.

'Purple/blue flowers' are indistinct but check Medicago sativa.

Top one compare with Berteroa incana.

    Bookmark   August 2, 2014 at 7:14AM
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depeche(5)

Thank you both! You were right on all accounts!

#1 - Hoary Alyssum (Berteroa incana)
My entire back yard is coated in the white flowers before I get a chance to mow again! Almost more white than there is green! This is a perfect photo of them:
http://www.francini-mycologie.fr/BOTANIQUE/Berteroa_incana.html

#2 Alfalfa (Meidcago sativa) - This guy isnt so bad, he stays within the bounds of the field. I just always wondered what they were.
http://michiganflora.net/image.aspx?img=2116&id=1332

#3 - White Sweet Clover (Melilotus alba) - Not a bad problem
http://michiganflora.net/species.aspx?id=1333

#4 - Spotted Knapweed (Centaurea stoebe subsp. micranthos) - This is the second most prominent weed in the yard. I am in michigan and have sandy soil. I guess this is a statewide problem.
http://nativeplants.msu.edu/restoration/spotted_knapweed

And thanks to both of you: I found the following for help identifying any more I encounter! (Shared incase anyone else stumbles on this).

http://www.invasive.org/
http://michiganflora.net/

    Bookmark   August 8, 2014 at 9:45PM
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