Climate zones
John Grimshaw (Fri, 28 Oct 2005 11:29:11 PDT)

John Bryan asked about soil-warming cables in the open ground, which always
sounds like wonderful luxury. I have come across it only once, in the garden
at Waltham Place, a mile or so from where I write in Maidenhead west of
London. The owners are the Oppenheimers, of De Beers fame, so they can
afford it: just a shame they only grow hardy plants in those beds! (Canna &
Tradescantia pallida, both of which in recent years at least can be regarded
as hardy hereabouts.)

John Grimshaw