Tags: -5°C, blueberry defoliation, Blueberry Rust, Brigitta, canopy management, chemical defoliants, cold climate, cool climate, deciduous cultivars, disease lifecycle, disease monitoring, fungicide timing, hand defoliation, infection risk, leaf development, leaf wetness, Legacy, non-deciduous blueberries, orchard hygiene, overwintering rust, photoperiod model, ProTone, Pucciniastrum minimum, rust management, rust spores, semi-deciduous blueberries, semi-evergreen blueberries, spore germination, sub-zero temperatures, Tasmania, Tasmanian blueberries, urediniospores, varietal susceptibility, warm wet weather, weather modelling, winter survival