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Yarrow Concerns #643767

Asked May 31, 2020, 12:58 PM EDT

I have an Yarrow (Achillea millefolium) and Im concerned about it spreading into my lawn. should I be concerned or can you offer any suggestions. love the plant but dont want future problems.

Wayne County Michigan

Expert Response

Yarrow can be considered invasive if left unchecked. Yarrow has a spreading rhizomatous growth form.  Rhizomatous growth is a modified subterranean plant stem that sends out roots and shoots from its stems.  Rhizomes develop from axillary buds and grow horizontally. The rhizome also retains the ability to allow new shoots to grow upwards.  Yarrow will also self seeds at the end of the season from the dried blooms.  
Regular dead heading of old blooms as well as removal of new unwanted plants developing from rhizomes is required to keep yarrow in check.

Thanks for contacting Ask an Expert.

Pam
An Ask Extension Expert Replied June 02, 2020, 12:01 PM EDT

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