Contents2 From the editor 3 President’s report 4 Letters 6 New South Island vice president 7 DIY olla 8 Apple breeding using genetics 10 Field trip: Waiata Gardens 12 Truffles Q&A 15 Growing szechuan pepper 17 Serviceberry (Amelanchier canadensis) 19 Nitrogen fixing plants 24 Life membership recipient: Bill Rae 25 Avocado trials with mycorrhizal fungi 28 Field trip: Plant & Food Research Riwaka 30 Conifer grafting 34 Winter tasks 36 Research update 38 Mountain pawpaw breeding 39 Knowledge in a nutshell: Eric Cairns 42 Pests: Argentine ants 45 The vision for NZ horticulture 46 Pips & Pieces 48 Subscriptions Front cover: Fruit kaleidoscope |