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Tickseed sunflower
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young1
Just Arrived
Joined: 31 Aug 2006
Posts: 3
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| Posted: Thu Aug 31, 2006 12:19 pm Post subject: Tickseed sunflower |
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A few years back, I transplanted some tickseed sunflowers from the wild to my garden. They bloomed and went to seed, and I now have them growing everywhere. The problem is that each year, less and less of the plants bear flowers with petals. Now they just look like weeds with burrs where there should be flowers. These plants grow and reseed vigorously, but without petals. Can anyone explain this phenomenon?
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eileen
Moderator & Resident Taxonomist
 Moderator
Joined: 07 Feb 2005
Location: Scotland (Map)
Posts: 10896
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| Posted: Thu Aug 31, 2006 12:34 pm Post subject: |
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I found this website that tells you all about tickseed sunflowers Young1 BUT it doesn't say anything about no petals forming. 
http://www.illinoiswildflowers.info/wetland/plants/ts_sunflower.htm
I wonder if it's actually some night insect that's munching the petals - maybe earwigs? Sorry I can't be more helpful to you but I'd like toWELCOME you to our forums. I hope you'll stay with us and join in the fun here. 
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young1
Just Arrived
Joined: 31 Aug 2006
Posts: 3
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| Posted: Thu Aug 31, 2006 8:56 pm Post subject: pests |
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No, it is definitely not a pest. The flowers are clearly forming without petals.
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eileen
Moderator & Resident Taxonomist
Moderator
Joined: 07 Feb 2005
Location: Scotland (Map)
Posts: 10896
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| Posted: Fri Sep 01, 2006 12:39 am Post subject: |
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Hi again.
I found this website about plants with no petals but I don't know if it actually answers your question for you.
www.biosci.wayne.edu/news/golenberg_presentation.ppt
Just open the file - it make take a little time so bear with it.
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young1
Just Arrived
Joined: 31 Aug 2006
Posts: 3
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| Posted: Fri Sep 01, 2006 1:22 am Post subject: |
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Well, that's better than anything I've been able to find. Thank you very much for the link.
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cajunbelle
Daylily Diva
Joined: 04 Jun 2006
Location: zone 8b Louisiana (Map)
Posts: 2974
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| Posted: Fri Sep 01, 2006 1:50 am Post subject: |
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Welcome young1, sorry I have no answer to your problem. I have never seen a plant to that.
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Sharon
Phil. 4:13
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reggaefan
Official Poet Laureate
Joined: 24 Aug 2006
Location: Zone 8b Louisiana (Map)
Posts: 2520
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| Posted: Fri Sep 01, 2006 10:58 am Post subject: |
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Welcome young one I have no idea but sooner or later someone here will find out.
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Richard
"We have met the enemy,and it is us." POGO
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