I agree, just pull it. It is shallow rooted and pulls rather easily, and a
plant that covers a large area often has only one small root. It won't
regrow this year even if you miss a bit. It is what I consider a "winter
weed", that grows in the cooler weather, sets seed, and dies off in the heat
of summer, to reappear again the next winter. If you pull it before the
seeds ripen, you'll have less of it next year.
Zone 6, South-central PA
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