Media coverage of cannabis spikes precipitously during 4/20 week, and so do the number of parties and events nationwide trumpeting the pleasures of our favorite plant. But what about sales?

In Colorado, the 4/20-effect is real according to data from BDS Analytics, one of the premiere sources of cannabis data in the industry. For the first three months of 2016, sales in the state bounced around between $88.5 million and $93 million. But then came 4/20, and sales rocketed to $117.4 million. The following month? Back down to $98.5 million. April was not the busiest month of the year — even three years into legal adult-use cannabis sales in Colorado, growth month-over-month remains strong, and by July monthly sales were above April’s. But no other month experiences a spike like April.

Things are different in other states. In Washington, cannabis sales in March of last year hit $47.23 million. The next month, April, which rose so robustly in Colorado, just nudged up to $49.06 million. And sales in May, which fell (in comparison to April) in Colorado, rose a few clicks to $51.71 in Washington.

The story is similar in Oregon, although in the Beaver State sales of cannabis products other than flower were not available in adult-use stores during last year’s 4/20, so we are not comparing apples to apples. Either way, if we look at sales in medical shops in Oregon last year, we see sales actually drop between March, with sales of $10.07 million, and April, when shops sold $9.71 million worth of cannabis.

Last year, at least, it was the cannabis consumers in the Centennial State who treated 4/20 like a holiday that demands extra trips to dispensaries for Sour Diesel, vape pens and gummy bears. Soon enough, we will know how sales fared in all three of these states for April 2017.