When is it Time to Plant Cell Phone Casings?

Scientists are working on biodegradable plastic cell phone casings. Each special casing will contain a seed. So far, they have been working with dwarf sunflower seeds, but plan to have some other flowers available.

When to plant them? The scientists at PVAXX Research (in England--of course!) say they will be available in about a year.

Source: USA Weekend, February 13, page 8.