In 2013 the local coffeeshop-organisation in Haarlem filed a plan for growing weed at the municipality, as an experiment in the context of a coffeeshop trademark which was established in Haarlem already; To make the chain of cannabis supplu complete.

The quantity of the experiment,  where independant growers can sypply coffeeshops in Haarlem, will be arranged by the local tax office. Labeling and a shared grow-facility for all coffeeshops are the main features of this initiative.