Sarah Eberle hopes to inspire people to nurture where town and countryside meet and nature is need of protection Sarah Eberle hopes to inspire people to nurture where town and countryside meet and nature is need of protection Stinging nettles, buttercups, broken crockery, fly-tipped flowers and a discarded gnome are not the usual hallmarks of an RHS Chelsea flower show garden. But this year’s On the Edge garden by Sarah Eberle – the most decorated designer at Chelsea – is designed not to look