Plant ID forum: Tiny blue flowers with many spiny petals

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Plantiful
Sep 30, 2015 1:04 AM CST
Not sure how to describe these flowers except as tiny with blue spiny petals.
The flowers grow in clusters and at first glance they may seem large but the individual flowers are small.
Low to the ground and leaves are also small and serrated.

They're in a planter outside a municipal building and so I can't say if they are native around here (Pacific Northwest).

Thumb of 2015-09-30/Plantiful/0cee01

Name: Judy
Simpsonville SC (Zone 7b)
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SCButtercup
Sep 30, 2015 4:47 AM CST
A kind of Armeria? I'm not an expert this is just a knee jerk guess. Anyone else?
Name: Tara
NE, Florida (Zone 9a)
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terrafirma
Sep 30, 2015 5:10 AM CST
Maybe Agertum? A Floss flower?
Name: Janet Super Sleuth
Near Lincoln UK
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JRsbugs
Sep 30, 2015 5:16 AM CST
Definitely Ageratum, but there's a lot of cultivars.

https://www.google.co.uk/search?q=ageratum+blue&biw=1440&bih...

Plantiful
Sep 30, 2015 5:29 AM CST
Yes! Ageratum houstonianum 'Hawaii Blue' or Floss Flower.

Thanks again JRsbugs and terrafirma!
Hurray!
Name: Janet Super Sleuth
Near Lincoln UK
Charter ATP Member Organic Gardener Garden Photography Bee Lover Dragonflies Cat Lover
Butterflies Birds Plant Identifier I was one of the first 300 contributors to the plant database! Spiders!
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JRsbugs
Sep 30, 2015 5:45 AM CST
I tip my hat to you.

Are your sure about the cultivar?

Plantiful
Sep 30, 2015 3:30 PM CST
No, I'm not really sure. The colour seems right.
But it certainly is, as you said, an Ageratum.

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