Blackcurrant 'Ben Tirran' Fruit Bush 3Ltr PotLate flowering variety with vigorous growth. Fruit Bush Harvest: July JMC Bred by the scottish crop research institute, ben tirran is a late flowering variety that is vigorous and has a compact growth habit. It produces consistently heavy crops of very late ripening currants excellent for extending the season. it also ensures that this variety has good resistance to frost. The attractive glossy fruit has a rich tart flavour and is probably best used