Anyone knows what's this weeds? Thanks

[openoffice]

Anyone knows what's this weeds? Thanks

 

[Twigs]

Hard to say, it may be Daisy Fleabane.

 

[cpp gardener]

Erigeron karvinskianus, Santa Barbara Daisy (fleabane). Your weed, someone else's groundcover.

 

[openoffice]

Erigeron karvinskianus, Santa Barbara Daisy (fleabane). Your weed, someone else's groundcover.

Thanks. Yes, I believe it is in Daisy family.

 

[oneeye]

NO its a Slender Aster,
Common name: Slender Aster
Latin name: Aster subulatus Michx. var. ligulatus Shinners
Family: Asteraceae
Life Cycle: Annual or Perennial
Type: Broadleaf

 

[Twigs]

NO its a Slender Aster,
Common name: Slender Aster
Latin name: Aster subulatus Michx. var. ligulatus Shinners
Family: Asteraceae
Life Cycle: Annual or Perennial
Type: Broadleaf

I looked at your Slender Aster.....

I still believe it is a Fleabane.

 

[openoffice]

Erigeron karvinskianus, Santa Barbara Daisy (fleabane). Your weed, someone else's groundcover.

Lol I know it's weeds. but I like the small followers.

 

[openoffice]

NO its a Slender Aster,
Common name: Slender Aster
Latin name: Aster subulatus Michx. var. ligulatus Shinners
Family: Asteraceae
Life Cycle: Annual or Perennial
Type: Broadleaf

Thanks oneeye! They are all looks the same to me from the online photos. What's the key difference between them?

 

[openoffice]

Thanks Folks for the replies. I found this
Asters & Fleabanes

Asters

What are they?
Asters and fleabanes are familiar to all. Their flowers are daisy-like and have either white or purplish to bluish petals. At one time, most of these plants fell within a large genus of plants, the genus Aster. However, more recent taxonomies split them up into a number of genera, with the tongue- tripping Symphyotrichum now containing the most species.

Note that the Fleabanes in the genus Erigeron have been included here as they superficially resemble asters with their many-rayed, white flowers with yellow centers. Generally, however, fleabanes flower in late spring and early summer while the 'true asters' flower in late summer and the fall.

Where are they found?
Asters are found mostly in open, grassy fields and along roadsides, but there are one or two smaller species that occur along woodland paths or in marshes. There is even a couple of saltmarsh species.

Identification
Many of these species are very variable in appearance and some individual plants defy certain identification (with some probably being hybrids). However, most should be identifiable using details of stem hairiness, flower arrangement on the stem and leaf shape.

One technical term that it is useful to know when identifying this group is Phyllary. The phyllaries are the greenish outer part of the compound head of flowers and which can differ quite significantly between two, otherwise very similar, species.

 

[edinburgh]

Looks like Fleabane to me too.

 

[Sufee]

Erigeron karvinskianus
Mexican fleabane

Erigeron karvinskianus | Mexican fleabane Herbaceous Perennial/RHS Gardening

Find help & information on Erigeron karvinskianus Mexican fleabane Herbaceous Perennial from the RHS

www.rhs.org.uk

 

[Marck]

I agree that the plant pictured in the OP is Mexican Fleabane (Erigeron karvinskianus), also known as Karvinski's Fleabane or Santa Barbara Daisy. This perennial species is native to Mexico and Central America, but is also cultivated widely as an ornamental plant. Furthermore, it has since become a rampant weed of gardens and ruderal areas in many parts of the world, including California.
Erigeron karvinskianus is a phenotypically variable species with regard to habit, leaf size, ray flower color, and other traits.

Though there are seven closely related species in Erigeron section Karvinskia, E. karvinskianum is the only one cultivated or naturalized outside of its native range.