Enumclaw-area residents are asked to be on the lookout for milk thistle, a Class A noxious weed that has made inroads throughout the Plateau.

The weed, which made its debut in the area in 2003, is particularly fond of cattle operations – it thrives in the soil created by cattle. It is believed the weed first came to the area in feed purchased by cattlemen.

Milk thistle is recognized by white, marbling patters on its leaves, spines found along leaf edges and stems and a single, large, purple flower that grows from each stem.

If left unchecked, milk thistle can take over a field. The No. 1 problem is that it is toxic to cattle and sheep.

King County’s Department of Natural Resources and Parks is working to eradicate the weed through an outreach program sponsored by its Water and Land Resources Division. Anyone suspecting they have milk thistle on their property is urged to call 206-296-0290. Staff members will do an on-site inspection or make themselves available for anyone wishing to deliver a sample.

For information, or to report milk thistle, the public can call the number above or visit www.kingcounty.gov/weeds.