This is, I believe, the identity of the weed which perniciously invades
part of my garden.

http://en.wikipedia.org/wiki/Whitetop

http://www.unce.unr.edu/programs/sites/tallwhitetop/

http://jennwarren.hubpages.com/hub/C...awn-and-Garden


Sorry for all the links, but this weed has been the bane of my life for
30 years. I *may* be just starting to see its grip loosening. I've
even risked planting that part of my garden again (except for one
corner). Previously, I've never dared move a wanted plant from that
area of the garden to another for fear of spreading it. I dream of the
day I never see another leafy spring rosette. Pedipalps crossed.

--
Spider
from high ground in SE London
gardening on clay