MOUNT VERNON, Wash. – Friends who grew up with Ethan Chapin have planted a tulip garden in his memory.

The Skagit Valley Herald reports they gathered last week to plant the garden near the Kincaid Street southbound I-5 on-ramp in Mount Vernon.

They call the cluster of yellow and white tulips “Ethan’s Smile.”

Many of them went to school with Ethan in Mount Vernon and some of them worked alongside him at Skagit County’s Tulip Town.

Ethan was one of four University of Idaho students who were stabbed to death in Moscow early on November 13th.

Police there continue the investigation but have no murder weapon or suspect.

There has been online speculation about ties to an unsolved stabbing in Pullman, Washington in 1999, and another in Salem, Oregon last year.

But investigators say there does not appear to be any connection to those crimes.

The University of Idaho will hold a candlelight vigil for the four students on Wednesday, November 30th.