This week it's a much-looked forward to episode with none other than Nick Macer of Pan Global Plants. From the extraordinary plants which have turned up on his nursery, to the ways he's testing hardiness, Alan Gray (East Ruston Old Vicarage) and Thordis are enthralled. More fantastic plants next week in part two.

PLANT LIST

Philadelphus 'Casa Azul'

Philadelphus maculatus

Philadelphus mexicanus

Magnolia obovata

Magnolia × wieseneri

Begonia 'Torsa'

Begonia grandis subsp. evansiana ‘Bells and Whistles’

Begonia grandis subsp. holostyla ‘Nanjiang Silver’

Begonia grandis subsp. evansiana ‘Claret Jug’

Amomyrtus luma

Amomyrtus meli

Luma apiculata

Watsonia marlothii

Indigofera heterantha

Agave montana

Agave ovatifolia