As a nursery owner I would never advocate buying plants from the
supermarket, especially in plastic bags. ( supermarkets have already
destroyed the highstreet do we gardeners want then to put the nurseries out
of business too!!!)

But this is a variation on a tried and tested method of sowing wild flower
seed on motorway embankments.

It works very well there in difficult conditions so there is no reason why
not in the garden.

I would make sure that you have the ground clean before laying it out.

I hope they have the seed mix and species mix right as quick germinating
plants are likely to crowd out slower seedlings, but for a fiver it worth a
try. ( bit late this season?)

let us know how it goes

www.arghamvillage.co.uk