I’ve learned a lot about weeds over the decades, but I was never given the ominous warning “one year of seed, seven years of weed” until last year. I think every novice gardener should be given a t-shirt with this bit of wisdom. On the other hand that bit of wisdom might be too discouraging for a beginner. The truth is that if you are a gardener, you will have weeds. All kinds of weeds, and all are…