Yampah & Hall's Aster season

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Don Boucher

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Aug 27, 2025, 11:57:24 PM (10 days ago) Aug 27
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Hello,

Just as you all but gave up on native wildflowers in late summer, these two species have recently started blooming. I found these in Corvallis, along the bike path next to HWY 99W, just north of the wastewater treatment plant.

Hall's Aster blooms later than Douglas' Aster. Also, the flowers are paler and smaller and have fewer phyllaries (the little bracts beneath the ray petals).
I made a full comparison in Sept. 2021 (with photos), between Hall's and Douglas' Aster

Gairdner's Yampah (Perideridia gairdneri). I'm calling this P. gairdneri instead of P. oregana because the fruits are wider than long. It looks like Queen Anne's Lace at a glance. I made a full comparison in Aug 2023 (with photos), between Yampah & Queen Anne's Lace.

Don Boucher 
Corvallis

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nancy bee

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Aug 28, 2025, 10:03:30 PM (10 days ago) Aug 28
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Thanks Don. 

Three falls ago I bought native seed mixes and spread them around anywhere there was bare soil. Since then my collaborator and I have preferred to plant single species seed packets or plants because it’s easier to track what is where and put them together with other compatible plants. 

However, we are still getting some surprises from my initial effort. One of them is a large Halls Aster, growing  in a gap in a hedgerow with little competition. We puzzled over it, but Halls seems right and was in the seed mix. 


Nancy Bee

“Every morning I awake torn between a desire to save the world and an inclination to savor it. This makes it hard to plan the day. But if we forget to savor the world, what possible reason do we have for saving it? In a way, the savoring must come first.”
  
E.B. White





On Aug 27, 2025, at 9:57 PM, Don Boucher <donab...@gmail.com> wrote:


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