They are two collections of Camassia, one from Stella Exley of Hare Spring Plants in Sheffield and the other from the National Trust at Attingham Park, donated in 2015 from the estate of the previous Collection Holder, the late Margaret Owen MBE.
Wisteria spp & cvs is a new collection from Fiona Butcher of Millom, Cumbria.
Narcissus is a new collection from Backhouse Heritage Daffodils in Fife - an historic group of plants rescued from extinction by a family descendant of the Backhouse family, Caroline Thomson.
Malus domestica cvs. bred and grown in Hampshire and the Isle of Wight pre-1960 is a geographically defined collection of apple cultivars looked after by horticultural students at Sparsholt College.
Plant Heritage chief executive Sarah Quarterman said: "This new tranche of National Plant Collections illustrates why we value the diversity of plants - in particular, their historical value to our culture. We are grateful to these Collection Holders for their dedication and the work they have undertaken to bring these Collections into being, and for conserving them for future generations."