It's not that garlic mustard is a tenacious grower, it's that the plant is such a prolific seeder. In 3-5 years of vigilance you can exhaust the seed bank in the soil and have done with it. Pam's right that it doesn't flower and set seed the first year. I think all mustards do it like that.
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Date: 2008-06-03 01:45 am (UTC)K.