Business Insider spoke with some of the top marijuana VCs about their strategies for 2019. The VCs, including Poseidon's Morgan Paxhia and Canopy River's Narbe Alexandrian, pointed to ancillary tech, as well as biotech and ag-tech as hot areas for investment. Some, however, cautioned that the industry isn't likely to produce any 'unicorns' yet — at least until marijuana is federally legal. It's been a hot few weeks for investors looking to ride the upside of the marijuana wave. In January, marijuana VC piled into analytics startup Headset, California brand Caliva, and vape company Pax Labs, among other deals.