I was just in Seattle for a week and spent much of my time tasting coffee at leading roaster-retailers in the area.
One of the most striking things I noticed (this being late winter/early spring) at (to be specific) Zoka, Stumptown and Millstead, was that the only single origins promoted and brewed were Central American coffees. Given the time of year, this means these coffees were all approaching past-crop status: close to a year old. Adding insult to injury, much of the pre-bagged roasted coffee on offer was not only past crop but stale, with roast dates on some bags three weeks or more in the past
"Seasonal" offerings would have included October-November shipment Colombias from Huila, perhaps an outstanding Peru, and maybe dry-processed Ethiopians and Yemens or late-season Sumatras where acidity and freshness aren't the most important flavor elements.
As far as I know the only roaster in America who who can claim that old green coffees are still "seasonal" is George Howell's Terroir Coffee in Boston, since he freezes green beans in hermetically sealed bags to extend their shelf life. The fact that there's zero correlation between actual seasonality and what's on offer in theoretically coffee mad Seattle just underlines the "all hat, no cattle" reality of much Third Wave coffee marketing.
In the interests of not making this into yet another purely critical post, I'll share a bit about ways to make good use of high-quality Central American coffees over their life cycle, since it would seem that this knowledge is not being passed on to newer roasters in any systematic way.
Using an excellent high-altitude regional Guatemalan coffee from Huehuetenango as an example, we'll figure March/April shipment and thus May/June arrival in the U.S. The coffee will be at its peak of aroma and flavor at that time and will be delicious at any number of roasts, from city+ through espresso, but peak flavor expression for drip or vacuum pot brewing will be in the city+ to full city range.
Assuming regular daily tasting of one's production roasts, some fading of acidity will likely be noticeable by September/October, which calls for a very slight darkening of the roast to optimize what remains (more body, fewer top notes). By November or so it will be time to stop offering the coffee as a single origin, which should be fine as new crop coffees from places like Papua New Guinea, Colombia and Peru can replace it. It'll still offer much pleasure and deep flavors of bittersweet chocolate and peppery spice when used in an espresso blend, whether that blend is in the Italian style (Vienna+ roast) or taken darker still in the deep-roast tradition of Peet's and Starbucks.
This progression of use over time: pure and unblended and lightly-roasted when at its peak, blended when past-crop woodiness sets in, and incinerated in dark roasts at the end of its life cycle, works well for pretty much all washed Central and South American coffees. The ideal of course is to plan one's buying so that new crop coffees from other regions can replace fading ones from another, but this also requires deep and ongoing efforts to educate one's employees and customers about the true nature of seasonality, which as I pointed out at the outset of this post isn't going to happen when those who tout seasonality and freshness are in fact offering the exact opposite.