I leave it while it's fresh and pretty and just pull it up later when other plants are needing the space. It's a good filler with early flowers for pollinators.
Vendée - 20kms from Atlantic coast. "We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
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In the sticks near Peterborough
"We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw