Managing Weeds: Yellow ArchangelOctober 28, 2013
Is yellow archangel weed (aka Lamium or Lamiastrum galeobdolon) taking over your garden beds?
It used to be that this stuff was for sale in just about every nursery in the PacNW. Fortunately, we’re seeing less and less of this Class B Noxious weed for sale. But, the stuff is still eating garden beds everywhere — including ours — mostly because we can’t control what’s happening on the other side of the fence.
Like the bindweed and blackberries and holly that the renters next door do nothing about, this Lamium continues to thrive under neglect. Some might say: “But, it’s pretty when it blooms yellow, and those silvery leaves brighten up dark corners.” Our response: “It’s a non-native that spreads fast even in deep shade. It can easily smother out native plants. Oh, and it stinks!”
If you’ve got it, get it out from the roots sooner rather than later. Once it creates a dense patch, it can be difficult to remove all of the roots. But, if you’re going for it, find a clump and dig out the entire root. If it has sent out runners — above ground or under ground — follow those runners to then next clump, and remove everything. Using a garden fork to loosen the moistened and drained soil around a big patch and then following with a hand tool to get all the roots out can make for easier work.
Note the moistened and drained part. If the soil is rock hard, those roots just won’t come up very well.