Fw: Weed ID

[Mark Mayfield]

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From: Mark Mayfield <mark...@ksu.edu>
Sent: Wednesday, March 11, 2026 10:46
To: Kyle Grant <kkg...@ksu.edu>; K-State Herbarium <herb...@ksu.edu>
Subject: Re: Weed ID

 

Hi Kyle,

This looks like possibly one of the old world bluestems (Bothriochloa bladhii, or KR - Bothriochloa ischaemum), or maybe even the native silver bluestem (Bothriochloa laguroides). Either way, it's a perennial rhizomatous grass. The only way to eliminate this from flower bed like you describe is to physically remove it. Careful spot treatment is an option if they can avoid hitting the desirable plants.

Mark

Mark H. Mayfield
Division of Biology
1717 Claflin Rd. 
Manhattan, Kansas 66506-4900
785-532-2795 (voice)

Office: 304 Bushnell Hall

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From: Kyle Grant <kkg...@ksu.edu>
Sent: Tuesday, March 10, 2026 15:45
To: K-State Herbarium <herb...@ksu.edu>
Subject: Weed ID

 

Mark,

 

 

Can you help me ID this weed? This weed keep coming up through flowerbeds, the flowers are Hostas and Iris. How do you kill it without killing the flowers? I appreciate your help on this. Have a Great Day!

 

 

 

Thank You,

Kyle Grant

Pawnee County

4-H And Agricultural and Natural Resource Agent