Boskoop ( pronunciation ) is a town in the province of South Holland. It was a separate municipality until it merged into Alphen aan den Rijn in 2014. The town had a population of 15,050 in 2012 and covers an area of 7.29 km (2.81 sq mi) of which 1.39 km (0.54 sq mi) is water. It's the world's biggest joined floriculture area.