The holiday season is underway and so too are sales. The cannabis industry is no exception, with December sales expected to be strong once again. Data firm LeafLink reports that sales jumped 33% the week leading up to Christmas 2020 (December 21-December 24) compared to the previous four weeks. Christmas Eve saw a 61% increase compared to the previous four Thursdays. "December is a massive sales month for cannabis, with sales figures in the company…