Pacific Northwest Gardening: Low groundcover for sunny slope, 1 by Spitzkopf

Spitzkopf wrote:
Hello enith,
I've used periwinkle, also called creeping myrtle, up in Ferndale and have had much success. It didn't keep the weeds out so I clipped it back, weeded then put a heavy layer of bark down around it. In one season it filled in fast, completely covering the bark and only had a few blades of grass come up next to the plantings. It will creep into the lawn a bit but the mower takes care of that pretty well although it still puts runners deep in the sod. The bark will help hold moisture and the periwinkle will hold the bark from blowing on the driveway after it is established. I planted about 12" apart and shoots can get a foot tall but they usually bend over and stay around 3 to 4 inches.

Here's a link to it: http://davesgarden.com/guides/articles/view/1742/

Tom