Leeks, spinach and arugula are always around, and when you puree them, fold them into little doughy pockets and float them in a light broth, you can fake it (spring) until you (it) make it (actually shows up).
One does not look away from baby artichokes at the market. If you do, for a minute, the season will be over. All too soon, it's time to wrestle with their bigger, hairier brothers.
June is the ideal month to bathe your pasta in an exorbitant amount of very fresh peas, but at all other times of the year, use frozen peas for this pasta and it will be simply perfect then too.