Warmer winters may not provide sufficient chilling for blackcurrants in the UK, delaying the start of the growing season and resulting in reduced yields and lower fruit quality, researchers have found. Speaking at the British Ecological Society's annual meeting in Birmingham today, a research group based at the James Hutton Institute highlights that milder winters may cause blackcurrant crops to flower later in the year, produce fewer fruit, and over repeated years, have a reduced plant lifespan.