Cowpen Daisy, Verbesina encelioides: Is it toxic to other plants?

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Cowpen Daisy, Verbesina encelioides

By frostweed
March 18, 2016

This lovely flower deserves a place of honor in every butterfly garden.

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Grapevine, Tx
Saloca
Mar 24, 2017 11:21 PM CST
This is my first time here, and asked this question under the "Is it invasive" thread, then realized that I probably should have started a new thread, so I apologize for repeating.
I live in Grapevine, Tx, between Dallas and Ft. worth. A neighbor has seedlings (numerous!) of Cow Pen Daisy. I was considering planting a few in my perennial bed. I can deal with a prolific reseeder, but recently read that this plant produces chemicals that kill other plants that grow too close. Well...how close is too close? Would this be a problem for established plants, or just other seedlings or newly planted things? Does anyone have info on this?
Name: josephine
Arlington, Texas (Zone 8a)
Hi Everybody!! Let us talk native.
Native Plants and Wildflowers Organic Gardener Million Pollinator Garden Challenge Butterflies Garden Ideas: Master Level Forum moderator
I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. Charter ATP Member Plant Identifier Birds Cat Lover
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frostweed
Mar 25, 2017 6:58 AM CST
I answered you on the other thread and copied to this one Smiling
I grow Cowpen Daisy and I love it. I have never heard of it being detrimental to other plants.
It is an annual and it grows fast but is very easy to pull, I just thin out what I don't want.
Since it grows fast it might shade out other slow growing plants nearby, but you can control that part.
I think the benefits in nectar and larval food far outweigh any drawbacks this plant might have. Smiling
Wildflowers are the Smiles of Nature.
Gardening with Texas Native Plants and Wildflowers.
Grapevine, Tx
Saloca
Mar 25, 2017 9:08 PM CST
Thank you! Several websites called it allelopathic, one was nrcs.usda.gov, but I appreciate your actual experience. I'm going to go ahead and try some in my perennial bed.
Name: josephine
Arlington, Texas (Zone 8a)
Hi Everybody!! Let us talk native.
Native Plants and Wildflowers Organic Gardener Million Pollinator Garden Challenge Butterflies Garden Ideas: Master Level Forum moderator
I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. Charter ATP Member Plant Identifier Birds Cat Lover
Image
frostweed
Mar 25, 2017 9:28 PM CST
You are welcome, I hope you will enjoy it.
I had never heard of it being allelopathic, but then I know I haven't heard of everything. Smiling
Wildflowers are the Smiles of Nature.
Gardening with Texas Native Plants and Wildflowers.

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