Pacific Northwest Gardening: Ground cover advice, 1 by bonehead

bonehead wrote:
My son just dug out all the sod from around my blueberries and I plan to surround each plant with rocks and replant with some sort of ground cover. I'd like to use something that will hold its own against grass and buttercups. The site is in partial sun, with the berries to the south and a couple fruit trees to the north. It's about 20' by 4'. Here's what I have available in no particular order:

Ajuga - does not seem to multiply aggressively for me, perhaps because it is the purply one. I don't have a lot of this but could cultivate it. Not sure how it fares with grass/weeds.

Goutweed - If I use this I will shear it to keep it on the short side (and not overwhelm the berries). I've used this around the base of the fruit trees, though, so would rather go with something else. Have lots.

Creeping Jenny - neutral about this but have lots of it.

Lamium - I have a couple varieties but find it to be weedy.

Vinca minor - nice that it's evergreen, but the buttercups are bullies in this. Have lots.

Arnica - tends to die down by end of summer, so probably not a candidate. Have lots.

Camomile - might work out. Have a small amount, could get more.

False Lily of Valley - native to my woods, so tons of it. Not sure if the site has enough shade.

Thymes - these tend to die off on me in harsh winters.

Sedums - I have a couple low growing ones, but when I've used them as ground covers the grass takes over.

Ornamental strawberries - I have a fair amount of these and they would be jolly.

Whatever I use will get tromped on to some degree when pruning and when harvesting the berries.

Any ideas? Thanks.