# How do you kill spiderwort?

**URL:** <https://boards.straightdope.com/t/how-do-you-kill-spiderwort/494504>\
**Category:** Factual Questions\
**Created:** [April 27, 2009, 2:52pm UTC](https://boards.straightdope.com/t/how-do-you-kill-spiderwort/494504 "2009-04-27T14:52:11Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Zsofia](https://avatars.discourse-cdn.com/v4/letter/z/7bcc69/32.png) [@Zsofia](https://boards.straightdope.com/u/Zsofia)\
**Post date:** [April 27, 2009, 2:52pm UTC](https://boards.straightdope.com/t/how-do-you-kill-spiderwort/494504/1 "2009-04-27T14:52:11Z")

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It’s lovely, but it has completely taken over my yard. It’s almost impossible to pull, and it comes back bigger and more and bigger and more every time. Is there any good way to do away with this stuff without kililing everything around it?

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**Author:** ![Kuboydal](https://avatars.discourse-cdn.com/v4/letter/k/ecb155/32.png) [@Kuboydal](https://boards.straightdope.com/u/Kuboydal)\
**Post date:** [April 27, 2009, 2:59pm UTC](https://boards.straightdope.com/t/how-do-you-kill-spiderwort/494504/2 "2009-04-27T14:59:03Z")

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Roundup will take care of it. You can also dig it up and give it to friends and family.

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**Author:** ![Zsofia](https://avatars.discourse-cdn.com/v4/letter/z/7bcc69/32.png) [@Zsofia](https://boards.straightdope.com/u/Zsofia)\
**Post date:** [April 27, 2009, 3:32pm UTC](https://boards.straightdope.com/t/how-do-you-kill-spiderwort/494504/3 "2009-04-27T15:32:00Z")

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Every time I try to Roundup something I kill all my perennials within a five foot radius. Is there a better way to do it other than to spray carefully?

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**Author:** ![jayjay](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/jayjay/32/6765_2.png) [@jayjay](https://boards.straightdope.com/u/jayjay)\
**Post date:** [April 27, 2009, 3:52pm UTC](https://boards.straightdope.com/t/how-do-you-kill-spiderwort/494504/4 "2009-04-27T15:52:46Z")

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Get glyphosate paste and brush it on. It’s tedious, but it concentrates the nasty right where you want it. Or use Roundup with a large piece of posterboard as a shield…just keep the posterboard at the edge of the spiderwort patch, shielding everything beyond it from the spray.

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**Author:** ![Kuboydal](https://avatars.discourse-cdn.com/v4/letter/k/ecb155/32.png) [@Kuboydal](https://boards.straightdope.com/u/Kuboydal)\
**Post date:** [April 27, 2009, 4:53pm UTC](https://boards.straightdope.com/t/how-do-you-kill-spiderwort/494504/5 "2009-04-27T16:53:18Z")

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Roundup should never be used on a windy day. If you do get drift or an accidental application, you can rinse the herbicide off with water and no harm will be done. I put nursery pots over plants I am concerned about harming. Apinting concentrate with a brush is also a great way to get rid over Ligustrum and Lonicera. Cut them down and paint the wound.

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**Author:** ![Zsofia](https://avatars.discourse-cdn.com/v4/letter/z/7bcc69/32.png) [@Zsofia](https://boards.straightdope.com/u/Zsofia)\
**Post date:** [April 27, 2009, 5:37pm UTC](https://boards.straightdope.com/t/how-do-you-kill-spiderwort/494504/6 "2009-04-27T17:37:49Z")

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> [@Kuboydal](#):
>
> Roundup will take care of it. You can also dig it up and give it to friends and family.

By the way, I think if I did that I would no longer have any friends and/or family.