The flowers of chocolate vine (Akebia quinata) have a chocolate-vanilla perfume. Photos: Gillian Vine : Weedy climbers

Banana passion fruit (Passiflora tripartita) is one of three species of passion flower on the NPPA list. : Weedy climbers

Although popular in England, cathedral bells (Cobea scandens) can no longer be sold in New Zealand. : Weedy climbers

Mile-a-minute (dipogon lignosus) gets the NPPA thumbs down. : Weedy climbers

Chilean flame creeper (tropaeolum speciosum) is an unacceptable member of the nasturtium family. : Weedy climbers

English honeysuckle (lonicera periclymenum) can be grown with a clear conscience, while the Japanese species (L. japonica) is on the NPPA list. : Weedy climbers