Sunflower seeds are the fruit of the beautiful, bright yellow coloured sunflower. The seeds are emanated from the seed-studded center. The seeds are greyish-green or black embedded in tear-shaped grey ...

Is it harmful to use the empty shells of sunflowers as mulch or to till it into the soil? I have so many of them from my bird feeders, but I know some of the seeds killed the grass a few years ago and ...