April happens to be the time of year when tulips bloom, and thus is the time of year in which the Skagit County Tulip Festival happens.
As the tourism board puts it, "The Mission of the Skagit Valley Tulip Festival is to coordinate and promote a countywide Spring celebration of the tulip bloom, in commemoration of the valley’s annual tulip harvest, and to be an advocate for Skagit Valley agriculture."
Essentially, it's a ploy to lure droves of people into small towns to visit local tulip growers and hopefully stimulate the local economy. Judging from the day's traffic, and the subsequent number of online dating profiles featuring people posing in front of beautifully arranged tulip beds, it is a pretty successful venture.
The three main tulip farms are RoozenGaarde, Tulip Town, and Garden Rosalyn.
We opted to visit RoozenGaarde, and to make it a longer trip by stopping at Deception Pass State Park, and enjoying a couple of beers and a boat ride on our way home.