A Northland plant nursery has left scientists scratching their heads, wondering how on earth their seedlings are growing so well…   The Akerama Marae Nursery is cropping Totara seedlings out in weeks, instead of months, and support manager Thelma Horne reckons it all comes down to a bit of TLC, waiata and korero…  She joined us on the Sunday edition of REX to tell us more.