I know that crows can be a serious nuisance to farmers. I don't have crows around here. The little birds eat the bird seed I put out for them and they rarely bother anything in my garden. Goldfinches love the seeds that Salvia Scarlet Lady put out at the end of the summer. They also love the sunflower seeds. I know it's costly to buy bird seed. Aside from my vegetables, I like to plant native flowers all over that attract local birds, then they don't care about the veggies. If you like, I"ll research native plants in your region that could help you keep the birds off your veggie seeds.