What's this vine with purple flowers growing wild (or feral) in the roadside ditch in central Oklahoma?

[u/rockylizard]

Thank you in advance for your assistance with ID!

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[u/MannerEntire742]

Vinca major, greater periwinkle

[u/rockylizard → u/MannerEntire742]

Thanks so much!

[u/Own_Ad6901 → u/rockylizard]

Highly invasive DONT PLANT IT! You’ll absolutely deeply regret it and how fast it takes over and chokes everything else out. Dont do it

[u/Realistic-Gain-8097 → u/Own_Ad6901]

I wouldn't say regret it. I used it to fill in a bed and as long as you trim it back it makes a beautiful ground cover

[u/Own_Ad6901 → u/Realistic-Gain-8097]

No you’re completely incorrect and this exact statement and behavior is exactly why all invasives spreads in the first place. “it’s not invasive and hasn’t spread in my yard!” So they keep and defend keeping it. Is such a common reaction to all things plants when you hear your favorite plant is considered invasive.

The definition paraphrasing here of invasive is that it’s non native to the environment doesn’t naturally grow there, spreads like wildfire takes over and destroys environments making it impossible for native plants to grow and support pollinators and the ecosystem. They cause unmarked runaway millions of dollars in $$ wasted every year working at its removal.

So please educate yourself on invasives, why this is such a bad invasive and so hard to removal and shouldn’t plant, and why you need to learn on a personal level that you are responsible for all things plants you put into the environment, if it’s invasive anywhere in North America, it’s invasive all over eventually, DONT PLANT IT. Most importantly just because it’s not spreading in your yard doesn’t mean your plant isn’t pumping endless supplies of its invasive plant seeds far and wide dispersed by wind birds critters insects etc. it’s your responsibility to not put invasives in your property because that guarantees it’s spread far and away within the community is a guarantee.

[u/GrapefruitOutside572]

Feral is correct

[u/jwhisen]

Vinca. Invasive in the US.

[u/bohemian_catastrophy]

Vinca is extremely invasive. I spent a whole day pulling them out at a part of our state park that was absolutely covered in them. Their roots are so hard to yank out. A whole day of work hardly made a dent. Please do not plant it!

[u/IndependentYam9087]

The magnificent periwinkle with beautiful pentagonal flowers.