This link is to a clip from the BBC Gardener's World programme - sadly it may only be available to those in the UK, but well worth mentioning in any case.
Graham Gunn, an SRGC member, (of course!) works at Kevock Garden Plants (and has been a part of many of their Gold Medal display teams at RHS shows) and in this clip he talks, with clarity and conciseness, about Meconopsis, in particular, the 'Big Blue Poppies'
Enjoy!
https://www.bbc.co.uk/programmes/p09mr8hr
